curtness vs brusqueness

curtness and brusqueness both are nouns.

Word	Noun	Adjective	Verb	Adverb
curtness	Yes	No	No	No
brusqueness	Yes	No	No	No

As nouns, curtness and brusqueness are synonyms defined as:

Other synonyms of curtness include abruptness, gruffness, shortness.

curtness (noun)	brusqueness (noun)
an abrupt discourteous manner	an abrupt discourteous manner