rarefied vs noble

rarefied is not a noun while noble is a noun.

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

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

rarefied (adjective)	noble (adjective)
of high moral or intellectual value; elevated in nature or style	having or showing or indicative of high or elevated character
having low density	of or belonging to or constituting the hereditary aristocracy especially as derived from feudal times
	impressive in size, manner, or appearance
	inert especially toward oxygen