juvenile body vs material body

juvenile body and material body both are nouns.

Word	Noun	Adjective	Verb	Adverb
juvenile body	Yes	No	No	No
material body	Yes	No	No	No

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

Other hypernyms of juvenile body include anatomy, bod, build, chassis, figure, flesh, form, frame, human body, physical body, physique, shape, soma.

juvenile body (noun)	material body (noun)
the body of a young person	alternative names for the body of a human being