have-not vs pauper

have-not and pauper both are nouns.

Word	Noun	Adjective	Verb	Adverb
have-not	Yes	No	No	No
pauper	Yes	No	No	No

As nouns, pauper is a hyponym of have-not; that is, pauper is a word with a more specific, narrower meaning than have-not:

Other hyponyms of have-not include poor white trash, white trash, down-and-out, clochard, drifter, floater, vagabond, vagrant.

have-not (noun)	pauper (noun)
a person with few or no possessions	a person who is very poor