Discourse
/dɪsˈkɔː(ɹ)s/
noun
Verbal exchange, conversation.
Expression in words, either speech or writing.
A formal lengthy exposition of some subject, either spoken or written.
“The preacher gave us a long discourse on duty.”
Synonyms: communication, expression, dissertation, lecture, study, treatise, ratiocination, conversation
verb
To engage in discussion or conversation; to converse.
To write or speak formally and at length.
To debate.