brusqueness vs curtness

brusqueness and curtness both are nouns.

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

As nouns, brusqueness and curtness are synonyms defined as:

Other synonyms of brusqueness include abruptness, gruffness, shortness.

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