schlockmeister vs merchandiser

schlockmeister and merchandiser both are nouns.

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

As nouns, merchandiser is a hypernym of schlockmeister; that is, merchandiser is a word with a broader meaning than schlockmeister:

schlockmeister: (slang) a merchant who deals in shoddy or inferior merchandise
merchandiser: a businessperson engaged in retail trade

Other hypernyms of schlockmeister include merchant.

schlockmeister (noun)	merchandiser (noun)
(slang) a merchant who deals in shoddy or inferior merchandise	a businessperson engaged in retail trade