mender vs fixer

mender and fixer both are nouns.

Word	Noun	Adjective	Verb	Adverb
mender	Yes	No	No	No
fixer	Yes	No	No	No

As nouns, mender and fixer are synonyms defined as:

Other synonyms of mender include repairer.

mender (noun)	fixer (noun)
a skilled worker who mends or repairs things	synthetic narcotic drug similar to morphine but less habit-forming; used in narcotic detoxification and maintenance of heroin addiction
	someone who intervenes with authorities for a person in trouble (usually using underhand or illegal methods for a fee)
	a skilled worker who mends or repairs things
	a chemical compound that sets or fixes something (as a dye or a photographic image)