message

(noun) a communication (usually brief) that is written or spoken or signaled. Example: "He sent a three-word message."

(noun) what a communication that is about something is about. Synonyms: content, subject matter, substance.

(verb) send a message to. Example: "She messaged the committee."

(verb) send as a message. Example: "She messaged the final report by fax."

(verb) send a message. Example: "There is no messaging service at this company."