nobility vs honourableness

nobility and honourableness both are nouns.

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

As nouns, honourableness is a hypernym of nobility; that is, honourableness is a word with a broader meaning than nobility:

nobility: the quality of elevation of mind and exaltation of character or ideals or conduct
honourableness: the quality of deserving honor or respect; characterized by honor

Other hypernyms of nobility include honorableness.

nobility (noun)	honourableness (noun)
the quality of elevation of mind and exaltation of character or ideals or conduct	the quality of deserving honor or respect; characterized by honor
a privileged class holding hereditary titles
the state of being of noble birth