repair vs repairer

repair and repairer both are nouns.

Word	Noun	Adjective	Verb	Adverb
repair	Yes	No	Yes	No
repairer	Yes	No	No	No

repair (noun)	repairer (noun)
the act of putting something in working order again	a skilled worker who mends or repairs things
a frequently visited place
a formal way of referring to the condition of something

repair (verb)	repairer (verb)
give new life or energy to
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