enigmaticness vs imperviousness

enigmaticness and imperviousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
enigmaticness	Yes	No	No	No
imperviousness	Yes	No	No	No

As nouns, imperviousness is a hypernym of enigmaticness; that is, imperviousness is a word with a broader meaning than enigmaticness:

enigmaticness: Mysteriousness, complexity; the property of being puzzling or inexplicable.
imperviousness: the quality of being impenetrable (by people or light or missiles etc.)

Other hypernyms of enigmaticness include incomprehensibility, impenetrability.

enigmaticness (noun)	imperviousness (noun)
Mysteriousness, complexity; the property of being puzzling or inexplicable.	the quality of being impenetrable (by people or light or missiles etc.)
The quality of a person of puzzling, secretive or contradictory character.