broth of a boy vs boy

broth of a boy and boy both are nouns.

Word	Noun	Adjective	Verb	Adverb
broth of a boy	Yes	No	No	No
boy	Yes	No	No	No

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

broth of a boy: an outstanding person; as if produced by boiling down a savory broth
boy: a friendly informal reference to a grown man

broth of a boy (noun)	boy (noun)
an outstanding person; as if produced by boiling down a savory broth	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