trouble-shoot vs doctor

trouble-shoot is not a noun while doctor is a noun.

Word	Noun	Adjective	Verb	Adverb
trouble-shoot	No	No	Yes	No
doctor	Yes	No	Yes	No

As verbs, doctor is a hypernym of trouble-shoot; that is, doctor is a word with a broader meaning than trouble-shoot:

trouble-shoot: solve problems
doctor: restore by replacing a part or putting together what is torn or broken

Other hypernyms of trouble-shoot include bushel, fix, furbish up, mend, repair, restore, touch on.

trouble-shoot (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

trouble-shoot (verb)	doctor (verb)
solve problems	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