noun (n)

• the repetition of consonants (or consonant patterns) especially at the ends of words(noun.communication)

  Synonym:
  consonant rhyme
  

  source: wordnet30
• the property of sounding harmonious(noun.attribute)

  Synonym:
  harmoniousness
  

  source: wordnet30
• Accord or agreement of sounds produced simultaneously, as a note with its third, fifth, and eighth.(noun)

  source: webster1913