Correspondence

Cor`re*spond"ence (-sp?nd"ens), n. [Cf. F. correspondance.] 1. Friendly intercourse; reciprocal exchange of civilities; especially, intercourse between persons by means of letters.

Holding also good correspondence with the other great men in the state.
Bacon.

To facilitate correspondence between one part of London and another, was not originally one of the objects of the post office.
Macaulay.

2. The letters which pass between correspondents.

3. Mutual adaptation, relation, or agreement, of one thing to another; agreement; congruity; fitness; relation.