Words that have identical vowel-based rhyme sounds in the tonic syllable. Moreover, that tonic syllable must start with a different consonantal sound.
There are no pure rhymes for "Yamaha".
Words that have a pure rhyme on their last syllable only.
ahh
    awe
      blah
        bois
          bra
            ca
              cha
                da
                  gras
                    ha
                      hah
                        ja
                          joie
                            ka
                              la
                                law
                                  ma
                                    mah
                                      moi
                                        na
                                          nah
                                            naw
                                              pa
                                                pla
                                                  qua
                                                    ra
                                                      rah
                                                        raw
                                                          sa
                                                            sha
                                                              spa
                                                                ta
                                                                  trois
                                                                    wa
                                                                      wah
                                                                        ya
                                                                          yah
                                                                            pas
                                                                              aha
                                                                                bourgeois
                                                                                  d'etat
                                                                                    hurrah
                                                                                      markkaa
                                                                                        ona
                                                                                          sanaa
                                                                                            ha ha
                                                                                              haha
                                                                                                baccarat
                                                                                                  ménage à trois
                                                                                                    Alvah
                                                                                                      Artois
                                                                                                        Bah
                                                                                                          Bekaa
                                                                                                            Bogota
                                                                                                              Dubois
                                                                                                                Dumas
                                                                                                                  Elga
                                                                                                                    Elna
                                                                                                                      Fatah
                                                                                                                        Francois
                                                                                                                          Francoise
                                                                                                                            GA
                                                                                                                              Hsia
                                                                                                                                Hua
                                                                                                                                  Langlois
                                                                                                                                    Lavoie
                                                                                                                                      Murrah
                                                                                                                                        Otha
                                                                                                                                          Pasha
                                                                                                                                            RHA
                                                                                                                                              Seraw
                                                                                                                                                Shah
                                                                                                                                                  Sirois
                                                                                                                                                    Valois
                                                                                                                                                      Zsa
                                                                                                                                                        Kuma
                                                                                                                                                          ga ga
                                                                                                                                                            gaga
                                                                                                                                                              Lady Gaga
                                                                                                                                                                hoorah
                                                                                                                                                                  oorah

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                                                                                                                                                                    Words that "almost" rhyme on the vowel-based rhyme sound of the stressed syllable like: be/eat or maybe/shapely.
                                                                                                                                                                    ga ga
                                                                                                                                                                      gaga
                                                                                                                                                                        Lady Gaga
                                                                                                                                                                          dada
                                                                                                                                                                            fatwa
                                                                                                                                                                              chihuahua
                                                                                                                                                                                la de da
                                                                                                                                                                                  Baja
                                                                                                                                                                                    Ottawa
                                                                                                                                                                                      Zsazsa
                                                                                                                                                                                        Basra
                                                                                                                                                                                          Savoie
                                                                                                                                                                                            Arkansas
                                                                                                                                                                                              Mardi Gras
                                                                                                                                                                                                Rhymes made up of more than one word. For instance, "jealous" and "tell us" or "shaky" and "make me."
                                                                                                                                                                                                There are no mosaic rhymes for "Yamaha".