Words that have identical vowel-based rhyme sounds in the tonic syllable. Moreover, that tonic syllable must start with a different consonantal sound.
egomaniac
    nymphomaniac
      megalomaniac
        Words that have a pure rhyme on their last syllable only.
        amnesiac
          aphrodisiac
            payback
              playback
                Merrimac
                  Merrimack

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                    Words that "almost" rhyme on the vowel-based rhyme sound of the stressed syllable like: be/eat or maybe/shapely.
                    payback
                      playback
                        haystack
                          racetrack
                            paperback
                              razorback
                                Rhymes made up of more than one word. For instance, "jealous" and "tell us" or "shaky" and "make me."