computing vs computer architecture

computing and computer architecture both are nouns.

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

computing (noun)	computer architecture (noun)
the procedure of calculating; determining something by mathematical or logical methods	(computer science) the structure and organization of a computer's hardware or system software
the branch of engineering science that studies (with the aid of computers) computable processes and structures	the art of assembling logical elements into a computing device; the specification of the relation between parts of a computer system