Scout vs girl

Scout and girl both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scout	Yes	No	No	No
girl	Yes	No	No	No

As nouns, girl is a hypernym of Scout; that is, girl is a word with a broader meaning than Scout:

Other hypernyms of Scout include female child, little girl, boy, male child.

Scout (noun)	girl (noun)
a Boy Scout or Girl Scout	a young female
	a girl or young woman with whom a man is romantically involved
	a youthful female person
	a friendly informal reference to a grown woman
	a female human offspring