baron vs noble

baron and noble both are nouns.

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

As nouns, noble is a hypernym of baron; that is, noble is a word with a broader meaning than baron:

Other hypernyms of baron include Lord, nobleman.

baron (noun)	noble (noun)
a British peer of the lowest rank	a titled peer of the realm
a very wealthy or powerful businessman
a nobleman (in various countries) of varying rank

baron (adjective)	noble (adjective)
	having or showing or indicative of high or elevated character
	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