open-source vs computing

open-source is not a noun while computing is a noun.

Word	Noun	Adjective	Verb	Adverb
open-source	No	Yes	No	No
computing	Yes	No	No	No

open-source (noun)	computing (noun)
	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

open-source (adjective)	computing (adjective)
of or relating to or being computer software for which the source code is freely available