child prodigy vs child

child prodigy and child both are nouns.

Word	Noun	Adjective	Verb	Adverb
child prodigy	Yes	No	No	No
child	Yes	No	No	No

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

Other hypernyms of child prodigy include fry, kid, minor, nestling, nipper, shaver, small fry, tiddler, tike, tyke, youngster, prodigy.

child prodigy (noun)	child (noun)
a prodigy whose talents are recognized at an early age	a young person of either sex
	a human offspring (son or daughter) of any age
	an immature childish person
	a member of a clan or tribe