simulation vs computing

simulation and computing both are nouns.

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

simulation (noun)	computing (noun)
the act of giving a false appearance	the procedure of calculating; determining something by mathematical or logical methods
the act of imitating the behavior of some situation or some process by means of something suitably analogous (especially for the purpose of study or personnel training)	the branch of engineering science that studies (with the aid of computers) computable processes and structures
representation of something (sometimes on a smaller scale)
(computer science) the technique of representing the real world by a computer program