showman vs worker

showman and worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
showman	Yes	No	No	No
worker	Yes	No	No	No

As nouns, worker is a hypernym of showman; that is, worker is a word with a broader meaning than showman:

Other hypernyms of showman include actor, doer.

showman (noun)	worker (noun)
a sponsor who books and stages public entertainments	sterile member of a colony of social insects that forages for food and cares for the larvae
a person skilled at making effective presentations	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done