repair vs trouble-shoot

repair is a noun but trouble-shoot is not a noun.

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

As verbs, trouble-shoot is a hyponym of repair; that is, trouble-shoot is a word with a more specific, narrower meaning than repair:

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

repair (noun)	trouble-shoot (noun)
the act of putting something in working order again
a frequently visited place
a formal way of referring to the condition of something

repair (verb)	trouble-shoot (verb)
give new life or energy to	solve problems
restore by replacing a part or putting together what is torn or broken
set straight or right
move, travel, or proceed toward some place
make amends for; pay compensation for