colloquialism vs operator

colloquialism and operator both are nouns.

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

colloquialism (noun)	operator (noun)
a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech	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