professional person vs doer

professional person and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
professional person	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of professional person; that is, doer is a word with a broader meaning than professional person:

Other hypernyms of professional person include actor, worker.

professional person (noun)	doer (noun)
a person engaged in one of the learned professions	a person who acts and gets things done