nonabsorbency vs impermeability

nonabsorbency and impermeability both are nouns.

Word	Noun	Adjective	Verb	Adverb
nonabsorbency	Yes	No	No	No
impermeability	Yes	No	No	No

As nouns, impermeability is a hypernym of nonabsorbency; that is, impermeability is a word with a broader meaning than nonabsorbency:

nonabsorbency: the property of not being absorbent
impermeability: the property of something that cannot be pervaded by a liquid

Other hypernyms of nonabsorbency include impermeableness.

nonabsorbency (noun)	impermeability (noun)
the property of not being absorbent	the property of something that cannot be pervaded by a liquid