electronic computer vs computing

electronic computer and computing both are nouns.

Word	Noun	Adjective	Verb	Adverb
electronic computer	Yes	No	No	No
computing	Yes	No	No	No

electronic computer (noun)	computing (noun)
a machine for performing calculations automatically	the procedure of calculating; determining something by mathematical or logical methods
	the branch of engineering science that studies (with the aid of computers) computable processes and structures