Discourse Community (DC) is the largest of the five knowledge domains of writing, and subsumes the other four (subject matter, genre, rhetorical, and writing process). While there is not a single definition of DCs, it is understood that a DC is composed of a group of people, often with shared goals and exclusive or technical language, who communicate in writing in a way understood by members of the DC.
Discourse Communities are varied and may include (but are not limited to):
Societal
Civic
Cultural
Academic