child prodigy vs tyke

child prodigy and tyke both are nouns.

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

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

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

child prodigy (noun)	tyke (noun)
a prodigy whose talents are recognized at an early age	a young person of either sex
	a crude uncouth ill-bred person lacking culture or refinement