child prodigy vs tiddler

child prodigy and tiddler both are nouns.

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

As nouns, tiddler is a hypernym of child prodigy; that is, tiddler 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, tike, tyke, youngster, prodigy.

child prodigy (noun)	tiddler (noun)
a prodigy whose talents are recognized at an early age	a young person of either sex