computing vs icon

computing and icon both are nouns.

Word	Noun	Adjective	Verb	Adverb
computing	Yes	No	No	No
icon	Yes	No	No	No

computing (noun)	icon (noun)
the procedure of calculating; determining something by mathematical or logical methods	a visual representation (of an object or scene or person or abstraction) produced on a surface
the branch of engineering science that studies (with the aid of computers) computable processes and structures	a conventional religious painting in oil on a small wooden panel; venerated in the Eastern Church
	(computer science) a graphic symbol (usually a simple picture) that denotes a program or a command or a data file or a concept in a graphical user interface