crassness vs insensitiveness

crassness and insensitiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
crassness	Yes	No	No	No
insensitiveness	Yes	No	No	No

As nouns, insensitiveness is a hypernym of crassness; that is, insensitiveness is a word with a broader meaning than crassness:

crassness: the quality of being crass--devoid of refinement
insensitiveness: the inability to respond to affective changes in your interpersonal environment

Other hypernyms of crassness include insensitivity.

crassness (noun)	insensitiveness (noun)
the quality of being crass--devoid of refinement	the inability to respond to affective changes in your interpersonal environment