paid vs professional

paid is not a noun while professional is a noun.

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

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

paid (adjective)	professional (adjective)
marked by the reception of pay	engaged in a profession or engaging in as a profession or means of livelihood
involving gainful employment in something often done as a hobby	characteristic of or befitting a profession or one engaged in a profession
yielding a fair profit	of or relating to a profession
	of or relating to or suitable as a profession
	engaged in by members of a profession