spy vs spying

spy and spying both are nouns.

Word	Noun	Adjective	Verb	Adverb
spy	Yes	No	Yes	No
spying	Yes	No	No	No

spy (noun)	spying (noun)
(military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors	the act of keeping a secret watch for intelligence purposes
a secret watcher; someone who secretly watches other people	keeping a secret or furtive watch
	the act of detecting something; catching sight of something

spy (verb)	spying (verb)
secretly collect sensitive or classified information; engage in espionage
watch, observe, or inquire secretly
catch sight of
catch sight of; to perceive with the eyes