scout vs watcher

scout and watcher both are nouns.

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

As nouns, watcher is a hypernym of scout; that is, watcher is a word with a broader meaning than scout:

Other hypernyms of scout include security guard, watchman.

scout (noun)	watcher (noun)
someone who can find paths through unexplored territory	a guard who keeps watch
a person employed to keep watch for some anticipated event	a close observer; someone who looks at something (such as an exhibition of some kind)
someone employed to discover and recruit talented persons (especially in the worlds of entertainment or sports)	a person who keeps a devotional vigil by a sick bed or by a dead body

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