nonentity vs pip-squeak

nonentity and pip-squeak both are nouns.

Word	Noun	Adjective	Verb	Adverb
nonentity	Yes	No	No	No
pip-squeak	Yes	No	No	No

As nouns, pip-squeak is a hyponym of nonentity; that is, pip-squeak is a word with a more specific, narrower meaning than nonentity:

Other hyponyms of nonentity include small fry, squirt, jackanapes, lightweight, whippersnapper.

nonentity (noun)	pip-squeak (noun)
a person of no influence	someone who is small and insignificant
the state of not existing