spy vs snoop

spy and snoop both are nouns.

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

As nouns, snoop is a hyponym of spy; that is, snoop is a word with a more specific, narrower meaning than spy:

spy: a secret watcher; someone who secretly watches other people
snoop: a spy who makes uninvited inquiries into the private affairs of others

Other hyponyms of spy include snooper, shadow, shadower, tail.

As verbs, spy and snoop are synonyms defined as:

Other synonyms of spy include sleuth, stag.

spy (noun)	snoop (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	a spy who makes uninvited inquiries into the private affairs of others
a secret watcher; someone who secretly watches other people

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