chaffer vs discourse

chaffer is not a noun while discourse is a noun.

Word	Noun	Adjective	Verb	Adverb
chaffer	No	No	Yes	No
discourse	Yes	No	Yes	No

As verbs, discourse is a hypernym of chaffer; that is, discourse is a word with a broader meaning than chaffer:

Other hypernyms of chaffer include converse.

chaffer (noun)	discourse (noun)
	an extended communication (often interactive) dealing with some particular topic
	extended verbal expression in speech or writing
	an address of a religious nature (usually delivered during a church service)

chaffer (verb)	discourse (verb)
talk socially without exchanging too much information	talk at length and formally about a topic
wrangle (over a price, terms of an agreement, etc.)	carry on a conversation
	to consider or examine in speech or writing