nonprofessional vs professional

nonprofessional is not a noun while professional is a noun.

Word	Noun	Adjective	Verb	Adverb
nonprofessional	No	Yes	No	No
professional	Yes	Yes	No	No

nonprofessional (noun)	professional (noun)
	a person engaged in one of the learned professions
	an authority qualified to teach apprentices
	an athlete who plays for pay

nonprofessional (adjective)	professional (adjective)
not professional; not engaged in a profession or engaging in as a profession or for gain	engaged in a profession or engaging in as a profession or means of livelihood
	characteristic of or befitting a profession or one engaged in a profession
	of or relating to a profession
	of or relating to or suitable as a profession
	engaged in by members of a profession