run-time error vs computing

run-time error and computing both are nouns.

Word	Noun	Adjective	Verb	Adverb
run-time error	Yes	No	No	No
computing	Yes	No	No	No

run-time error (noun)	computing (noun)
an error in logic or arithmetic that must be detected at run time	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