Fauntleroy vs boy

Fauntleroy and boy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fauntleroy	Yes	No	No	No
boy	Yes	No	No	No

As nouns, boy is a hypernym of Fauntleroy; that is, boy is a word with a broader meaning than Fauntleroy:

Other hypernyms of Fauntleroy include male child.

Fauntleroy (noun)	boy (noun)
an excessively polite and well-dressed boy	a youthful male person
	(ethnic slur) offensive and disparaging term for Black man
	a friendly informal reference to a grown man
	a male human offspring