operate vs operator

operate is not a noun while operator is a noun.

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

operate (noun)	operator (noun)
	an agent that operates some apparatus or machine
	someone who owns or operates a business
	a shrewd or unscrupulous person who knows how to circumvent difficulties
	a speculator who trades aggressively on stock or commodity markets
	(mathematics) a symbol or function representing a mathematical operation

operate (verb)	operator (verb)
perform surgery on
perform a movement in military or naval tactics in order to secure an advantage in attack or defense
handle and cause to function
keep engaged
perform as expected when applied
direct or control; projects, businesses, etc.