When used as nouns, discourse means verbal exchange, conversation, whereas discussion means conversation or debate concerning a particular topic. Discourse is also verb with the meaning: to engage in discussion or conversation.

Discourse is the practice of listening and speaking on a topic of shared interest or concern with intention to promote understanding, knowledge-building, and community engagement. Debate is a competitive, two-way conversation. The goal is to win an argument or convince someone, such as the other participant or third-party observers.