bargain vs bargainer

bargain and bargainer both are nouns.

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

bargain (noun)	bargainer (noun)
an agreement between parties (usually arrived at after discussion) fixing obligations of each	someone who purchases and maintains an inventory of goods to be sold
an advantageous purchase	negotiator of the terms of a transaction

bargain (verb)	bargainer (verb)
come to terms; arrive at an agreement
negotiate the terms of an exchange