high-minded vs high-mindedness

high-minded is not a noun while high-mindedness is a noun.

Word	Noun	Adjective	Verb	Adverb
high-minded	No	Yes	No	No
high-mindedness	Yes	No	No	No

high-minded (noun)	high-mindedness (noun)
	elevated ideals or conduct; the quality of believing that ideals should be pursued

high-minded (adjective)	high-mindedness (adjective)
of high moral or intellectual value; elevated in nature or style