noble vs honourable

noble is a noun but honourable is not a noun.

Word	Noun	Adjective	Verb	Adverb
noble	Yes	Yes	No	No
honourable	No	Yes	No	No

noble (noun)	honourable (noun)
a titled peer of the realm

noble (adjective)	honourable (adjective)
having or showing or indicative of high or elevated character	worthy of being honored; entitled to honor and respect
of or belonging to or constituting the hereditary aristocracy especially as derived from feudal times	adhering to ethical and moral principles
impressive in size, manner, or appearance
inert especially toward oxygen