scout vs sentry

scout and sentry both are nouns.

Word	Noun	Adjective	Verb	Adverb
scout	Yes	No	Yes	No
sentry	Yes	No	No	No

As nouns, scout and sentry are synonyms defined as:

scout and sentry: a person employed to keep watch for some anticipated event

Other synonyms of scout include lookout, lookout man, picket, sentinel, spotter, watch.

scout (noun)	sentry (noun)
someone who can find paths through unexplored territory	a person employed to keep watch for some anticipated event
a person employed to keep watch for some anticipated event
someone employed to discover and recruit talented persons (especially in the worlds of entertainment or sports)

scout (verb)	sentry (verb)
explore, often with the goal of finding something or somebody