noble vs baron

noble and baron both are nouns.

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

As nouns, baron is a hyponym of noble; that is, baron is a word with a more specific, narrower meaning than noble:

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

noble (adjective)	baron (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