chaffer vs chat

chaffer is not a noun while chat is a noun.

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

As verbs, chaffer and chat are synonyms defined as:

chaffer (noun)	chat (noun)
	songbirds having a chattering call
	birds having a chattering call
	an informal conversation

chaffer (verb)	chat (verb)
talk socially without exchanging too much information	talk socially without exchanging too much information
wrangle (over a price, terms of an agreement, etc.)