Correspondence
WordNet
noun
(1) Compatibility of observations
"There was no agreement between theory and measurement"
"The results of two tests were in correspondence"
(2) Similarity by virtue of corresponding
(3) (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane
(4) Communication by the exchange of letters
(5) A function such that for every element of one set there is a unique element of another set
(6) The relation of corresponding in degree or size or amount
WiktionaryText
Noun
plural correspondence except for below.
- Friendly discussion.
- Reciprocal exchange of civilities, especially conversation between persons by means of letters.
- An agreement of situations or objects with an expected outcome.
- Newspaper or news stories, generally.
- Postal or other written communications.
- Another name for a relation, plural correspondences.