ingenue vs juvenile person

ingenue and juvenile person both are nouns.

Word	Noun	Adjective	Verb	Adverb
ingenue	Yes	No	No	No
juvenile person	Yes	No	No	No

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

ingenue: an artless innocent young girl (especially as portrayed on the stage)
juvenile person: a young person, not fully developed

Other hypernyms of ingenue include juvenile.

ingenue (noun)	juvenile person (noun)
the role of an innocent artless young woman in a play	a young person, not fully developed
an artless innocent young girl (especially as portrayed on the stage)
an actress who specializes in playing the role of an artless innocent young girl