honorable vs honourableness

honorable is not a noun while honourableness is a noun.

Word	Noun	Adjective	Verb	Adverb
honorable	No	Yes	No	No
honourableness	Yes	No	No	No

honorable (noun)	honourableness (noun)
	the quality of deserving honor or respect; characterized by honor

honorable (adjective)	honourableness (adjective)
worthy of being honored; entitled to honor and respect
not disposed to cheat or defraud; not deceptive or fraudulent; marked by truth
deserving of esteem and respect
adhering to ethical and moral principles