Fauntleroy vs male child

Fauntleroy and male child both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fauntleroy	Yes	No	No	No
male child	Yes	No	No	No

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

Other hypernyms of Fauntleroy include boy.

Fauntleroy (noun)	male child (noun)
an excessively polite and well-dressed boy	a youthful male person