sentinel vs scout

sentinel and scout both are nouns.

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

As nouns, sentinel and scout are synonyms defined as:

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

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

sentinel (noun)	scout (noun)
a person employed to keep watch for some anticipated event	someone who can find paths through unexplored territory
	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)

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