impresario vs showman

impresario and showman both are nouns.

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

As nouns, impresario and showman are synonyms defined as:

impresario and showman: a sponsor who books and stages public entertainments

Other synonyms of impresario include promoter.

impresario (noun)	showman (noun)
a sponsor who books and stages public entertainments	a sponsor who books and stages public entertainments
	a person skilled at making effective presentations