Definition of "correspondence"
correspondence
/ˌkɒɹ.ɪˈspɒn.dəns/
noun
countable and uncountable, plural correspondences
Mutual communication or discourse:
(uncountable, obsolete) Friendly discussion.
(uncountable) Reciprocal exchange of civilities, especially conversation between persons by means of letters.
(countable or uncountable) Postal or other written communications.