agreement, understanding -- (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")
agreement, correspondence -- (compatibility of observations; "there was no agreement between theory and measurement"; "the results of two tests were in correspondence")
agreement, accord -- (harmony of people's opinions or actions or characters; "the two parties were in agreement")
agreement, arrangement -- (the thing arranged or agreed to; "they made arrangements to meet in Chicago")
agreement, concord -- (the determination of grammatical inflection on the basis of word relations)