operate vs fix

operate is not a noun while fix is a noun.

Word	Noun	Adjective	Verb	Adverb
operate	No	No	Yes	No
fix	Yes	No	Yes	No

As verbs, fix is a hyponym of operate; that is, fix is a word with a more specific, narrower meaning than operate:

Other hyponyms of operate include desex, desexualise, desexualize, sterilise, sterilize, unsex, face-lift, lift, trephine, venesect.

operate (noun)	fix (noun)
	the act of putting something in working order again
	an exemption granted after influence (e.g., money) is brought to bear
	a determination of the place where something is
	something craved, especially an intravenous injection of a narcotic drug
	informal terms for a difficult situation

operate (verb)	fix (verb)
perform surgery on	make infertile
perform a movement in military or naval tactics in order to secure an advantage in attack or defense	make fixed, stable or stationary
handle and cause to function	restore by replacing a part or putting together what is torn or broken
keep engaged	kill, preserve, and harden (tissue) in order to prepare for microscopic study
perform as expected when applied	make ready or suitable or equip in advance for a particular purpose or for some use, event, etc
direct or control; projects, businesses, etc.	decide upon or fix definitely
	take vengeance on or get even
	cause to be firmly attached
	put (something somewhere) firmly
	prepare for eating by applying heat
	set or place definitely
	to be about to do something
	influence an event or its outcome by illegal means