poorness vs insufficiency

poorness and insufficiency both are nouns.

Word	Noun	Adjective	Verb	Adverb
poorness	Yes	No	No	No
insufficiency	Yes	No	No	No

As nouns, insufficiency is a hypernym of poorness; that is, insufficiency is a word with a broader meaning than poorness:

Other hypernyms of poorness include deficiency, inadequacy.

poorness (noun)	insufficiency (noun)
the quality of being poorly made or maintained	lack of an adequate quantity or number
less than adequate	(pathology) inability of a bodily part or organ to function normally
the quality of being meager	a lack of competence
the state of having little or no money and few or no material possessions