Rhetoric
Part of speech: noun
Definition: The art of using language, especially public speaking, as a means to persuade. Meaningless language with an exaggerated style intended to impress.
Discourse
Part of speech: verb
Definition: To engage in discussion or conversation; to converse.To write or speak formally and at length.To debate.
Part of speech: noun
Definition: Verbal exchange, conversation.Expression in words, either speech or writing.A formal lengthy exposition of some subject, either spoken or written.Any rational expression, reason.An institutionalized way of thinking, a social boundary defining what can be said about a specific topic (after Michel Foucault).