Communication
Part of speech: noun
Definition: The concept or state of exchanging information between entities. The potential for information exchange. A message; the essential data transferred in an act of communication. The body of all data transferred to one or both parties during an act of communication. An instance of information transfer; a conversation or discourse. A passageway or opening between two locations. A connection between two tissues, organs, or cavities.
Correspondence
Part of speech: noun
Definition: 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.