viscount vs noble

viscount and noble both are nouns.

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

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

Other hypernyms of viscount include Lord, nobleman.

viscount (noun)	noble (noun)
a British peer who ranks below an earl and above a baron	a titled peer of the realm
(in various countries) a son or younger brother or a count

viscount (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