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 "nab n tab".
Words that have a pure rhyme on their last syllable only.
ab
    bab
      cab
        crab
          dab
            drab
              fab
                flab
                  gab
                    grab
                      jab
                        lab
                          mab
                            nab
                              scab
                                slab
                                  stab
                                    tab
                                      prefab
                                        baobab
                                          Babb
                                            Crabb
                                              Crabbe
                                                Knab
                                                  McNabb
                                                    Nabb
                                                      Rab
                                                        Tabb
                                                          backstab
                                                            kuttab
                                                              rehab
                                                                taxicab
                                                                  minilab
                                                                    Moab
                                                                      Punjab
                                                                        Ahab
                                                                          Words that "almost" rhyme on the vowel-based rhyme sound of the stressed syllable like: be/eat or maybe/shapely.
                                                                          backstab
                                                                            taxicab
                                                                              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 "nab n tab".