accord or agreement.

correspondence of sounds; harmony of sounds.

Music . a simultaneous combination of tones conventionally accepted as being in a state of repose. Compare dissonance ( def. 2 ) .

Prosody .

the correspondence of consonants, esp. those at the end of a word, in a passage of prose or verse. Compare alliteration ( def. 1 ) .

the use of the repetition of consonants or consonant patterns as a rhyming device.

Physics . the property of two sounds the frequencies of which have a ratio equal to a small whole number.

noun

disagreement , discord , dissonance , incompatibility , incongruence , incongruity , nonconformity

noun

accord , chime , chorus , concert , concord , conformity , congruence , congruity , correspondence , harmony , suitableness , tune , concordance , concurrence , rapport , unity , symphony , agreement