greathearted vs noble

greathearted is not a noun while noble is a noun.

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

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

greathearted (adjective)	noble (adjective)
noble and generous in spirit	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