spying vs spy

spying and spy both are nouns.

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

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

spying (verb)	spy (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