lowborn vs noble

lowborn is not a noun while noble is a noun.

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

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

lowborn (adjective)	noble (adjective)
of humble birth or origins	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