agreement

(n) the statement (oral or written) of an exchange of promises
- they had an agreement that they would not interfere in each other's business
- there was an understanding between management and the workers
understanding,
(n) compatibility of observations
- there was no agreement between theory and measurement
- the results of two tests were in correspondence
correspondence,
(n) harmony of people's opinions or actions or characters
- the two parties were in agreement
accord,
(n) the thing arranged or agreed to
- they made arrangements to meet in Chicago
arrangement,
(n) the determination of grammatical inflection on the basis of word relations concord,
(n) the verbal act of agreeing

understanding correspondence accord arrangement concord

disagreement dissonance dissension