nonentity vs small fry

nonentity and small fry both are nouns.

Word	Noun	Adjective	Verb	Adverb
nonentity	Yes	No	No	No
small fry	Yes	No	No	No

As nouns, small fry is a hyponym of nonentity; that is, small fry is a word with a more specific, narrower meaning than nonentity:

Other hyponyms of nonentity include pip-squeak, squirt, jackanapes, lightweight, whippersnapper.

nonentity (noun)	small fry (noun)
a person of no influence	someone who is small and insignificant
the state of not existing	a young person of either sex