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 "y full".
Words that have a pure rhyme on their last syllable only.
bull
    full
      pull
        schul
          wool
            shul
              bagful
                roomful
                  spoonful
                    handful
                      mouthful
                        mongrel
                          pitbull
                            schedule
                              pocketful
                                revengeful
                                  Kabul
                                    Turnbull
                                      Immanuel
                                        Mehul
                                          Words that "almost" rhyme on the vowel-based rhyme sound of the stressed syllable like: be/eat or maybe/shapely.
                                          There are no near rhymes for "y full".
                                          Rhymes made up of more than one word. For instance, "jealous" and "tell us" or "shaky" and "make me."