attorney vs professional person

attorney and professional person both are nouns.

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

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

attorney: a professional person authorized to practice law; conducts lawsuits or gives legal advice
professional person: a person engaged in one of the learned professions

Other hypernyms of attorney include professional.

attorney (noun)	professional person (noun)
a professional person authorized to practice law; conducts lawsuits or gives legal advice	a person engaged in one of the learned professions