infant prodigy vs small fry

infant prodigy and small fry both are nouns.

Word	Noun	Adjective	Verb	Adverb
infant prodigy	Yes	No	No	No
small fry	Yes	No	No	No

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

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

infant prodigy (noun)	small fry (noun)
a prodigy whose talents are recognized at an early age	someone who is small and insignificant
	a young person of either sex