overhaul vs doctor

overhaul and doctor both are nouns.

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

overhaul (noun)	doctor (noun)
periodic maintenance on a car or machine	children take the roles of physician or patient or nurse and pretend they are at the physician's office
the act of improving by renewing and restoring	a licensed medical practitioner
	a person who holds Ph.D. degree (or the equivalent) from an academic institution

overhaul (verb)	doctor (verb)
make repairs, renovations, revisions or adjustments to	give medical treatment to
travel past	alter and make impure, as with the intention to deceive
	restore by replacing a part or putting together what is torn or broken