honorableness vs honorable

honorableness is a noun but honorable is not a noun.

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

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

honorableness (adjective)	honorable (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