bargainer vs trader

bargainer and trader both are nouns.

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

As nouns, bargainer and trader are synonyms defined as:

bargainer and trader: someone who purchases and maintains an inventory of goods to be sold

Other synonyms of bargainer include dealer, monger.

bargainer (noun)	trader (noun)
someone who purchases and maintains an inventory of goods to be sold	someone who purchases and maintains an inventory of goods to be sold
negotiator of the terms of a transaction