bargain vs agree

bargain is a noun but agree is not a noun.

Word	Noun	Adjective	Verb	Adverb
bargain	Yes	No	Yes	No
agree	No	No	Yes	No

As verbs, agree is a hypernym of bargain; that is, agree is a word with a broader meaning than bargain:

bargain (noun)	agree (noun)
an agreement between parties (usually arrived at after discussion) fixing obligations of each
an advantageous purchase

bargain (verb)	agree (verb)
come to terms; arrive at an agreement	be in accord; be in agreement
negotiate the terms of an exchange	consent or assent to a condition, or agree to do something
	achieve harmony of opinion, feeling, or purpose
	be agreeable or suitable
	be compatible, similar or consistent; coincide in their characteristics
	go together
	show grammatical agreement