curtness vs gruffness

curtness and gruffness both are nouns.

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

As nouns, curtness and gruffness are synonyms defined as:

Other synonyms of curtness include abruptness, brusqueness, shortness.

curtness (noun)	gruffness (noun)
an abrupt discourteous manner	a throaty harshness
	an abrupt discourteous manner