Rhetorical Foundations
both the study and use of strategic communication, or talk and text in social interaction; the way that rhetors/authors/writers/composers use language in order to communicate with an audience; the art of using language effectively so as to communicate with, persuade, or influence others
the finding out or selection of topics to be treated, or arguments to be used; often referred to as the brainstorming or prewriting stage of the writing process, though invention takes place across the writing process