doctoral vs doctor

doctoral is not a noun while doctor is a noun.

Word	Noun	Adjective	Verb	Adverb
doctoral	No	Yes	No	No
doctor	Yes	No	Yes	No

doctoral (noun)	doctor (noun)
	children take the roles of physician or patient or nurse and pretend they are at the physician's office
	a licensed medical practitioner
	a person who holds Ph.D. degree (or the equivalent) from an academic institution

doctoral (adjective)	doctor (adjective)
of or relating to a doctor or doctorate

doctoral (verb)	doctor (verb)
	give medical treatment to
	alter and make impure, as with the intention to deceive
	restore by replacing a part or putting together what is torn or broken