depth vs superficiality

depth and superficiality both are nouns.

Word	Noun	Adjective	Verb	Adverb
depth	Yes	No	No	No
superficiality	Yes	No	No	No

As nouns, superficiality is a hyponym of depth; that is, superficiality is a word with a more specific, narrower meaning than depth:

Other hyponyms of depth include profoundness, profundity, shallowness.

depth (noun)	superficiality (noun)
the extent downward or backward or inward	lack of depth of knowledge or thought or feeling
degree of psychological or intellectual profundity	shallowness in terms of affecting only surface layers of something
the attribute or quality of being deep, strong, or intense
the intellectual ability to penetrate deeply into ideas
(usually plural) a low moral state