merchandise vs merchandiser

merchandise and merchandiser both are nouns.

Word	Noun	Adjective	Verb	Adverb
merchandise	Yes	No	Yes	No
merchandiser	Yes	No	No	No

merchandise (noun)	merchandiser (noun)
items for sale to the individual consumer	a businessperson engaged in retail trade
branded products meant to promote another product, especially films and pop groups

merchandise (verb)	merchandiser (verb)
engage in the trade of