bargaining vs haggle

bargaining and haggle both are nouns.

Word	Noun	Adjective	Verb	Adverb
bargaining	Yes	No	No	No
haggle	Yes	No	Yes	No

As nouns, haggle is a hyponym of bargaining; that is, haggle is a word with a more specific, narrower meaning than bargaining:

Other hyponyms of bargaining include plea bargain, plea bargaining, haggling, wrangle, wrangling, holdout.

bargaining (noun)	haggle (noun)
the negotiation of the terms of a transaction or agreement	an instance of intense argument (as in bargaining)

bargaining (verb)	haggle (verb)
	wrangle (over a price, terms of an agreement, etc.)