shallowness vs deepness

shallowness and deepness both are nouns.

Word	Noun	Adjective	Verb	Adverb
shallowness	Yes	No	No	No
deepness	Yes	No	No	No

As nouns, deepness is a hypernym of shallowness; that is, deepness is a word with a broader meaning than shallowness:

Other hypernyms of shallowness include depth.

shallowness (noun)	deepness (noun)
the quality of lacking physical depth	the quality of being physically deep
lack of depth of knowledge or thought or feeling	the extent downward or backward or inward
	a low pitch that is loud and voluminous
	the intellectual ability to penetrate deeply into ideas