omen vs prodigy

omen and prodigy both are nouns.

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

As nouns, omen and prodigy are synonyms defined as:

Other synonyms of omen include portent, presage, prognostic, prognostication.

omen (noun)	prodigy (noun)
a sign of something about to happen	an impressive or wonderful example of a particular quality
	a sign of something about to happen
	an unusually gifted or intelligent (young) person; someone whose talents excite wonder and admiration

omen (verb)	prodigy (verb)
indicate, as with a sign or an omen