e-mail vs computing

e-mail and computing both are nouns.

Word	Noun	Adjective	Verb	Adverb
e-mail	Yes	No	Yes	No
computing	Yes	No	No	No

e-mail (noun)	computing (noun)
(computer science) a system of world-wide electronic communication in which a computer user can compose a message at one terminal that can be regenerated at the recipient's terminal when the recipient logs in	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

e-mail (verb)	computing (verb)
communicate electronically on the computer