doctor vs doctorial

doctor is a noun but doctorial is not a noun.

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

doctor (noun)	doctorial (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

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

doctor (verb)	doctorial (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