boy vs male person

boy and male person both are nouns.

Word	Noun	Adjective	Verb	Adverb
boy	Yes	No	No	No
male person	Yes	No	No	No

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

Other hypernyms of boy include male.

boy (noun)	male person (noun)
a youthful male person	a person who belongs to the sex that cannot have babies
(ethnic slur) offensive and disparaging term for Black man
a friendly informal reference to a grown man
a male human offspring