- unison - corresponding exactly; "marching in unison"
--1 is a kind of agreement, accord
- unison - occurring together or simultaneously; "the two spoke in unison"
--2 is a kind of concurrence, coincidence, conjunction, co-occurrence
- unison - (music) two or more sounds or tones at the same pitch or in octaves; "singing in unison"
--3 is a kind of sound
- unison - occurring together or simultaneously; "the two spoke in unison"