agreement

The statement (oral or written) of an exchange of promises.

“they had an agreement that they would not interfere in each other's business”

Compatibility of observations.

“there was no agreement between theory and measurement”

The thing arranged or agreed to.

Harmony of people's opinions or actions or characters.

“the two parties were in agreement”

The determination of grammatical inflection on the basis of word relations.

The verbal act of agreeing.