noble-mindedness vs grandeur

noble-mindedness and grandeur both are nouns.

Word	Noun	Adjective	Verb	Adverb
noble-mindedness	Yes	No	No	No
grandeur	Yes	No	No	No

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

noble-mindedness: elevated ideals or conduct; the quality of believing that ideals should be pursued
grandeur: the quality of elevation of mind and exaltation of character or ideals or conduct

Other hypernyms of noble-mindedness include magnanimousness, nobility, nobleness.

noble-mindedness (noun)	grandeur (noun)
elevated ideals or conduct; the quality of believing that ideals should be pursued	the quality of being magnificent or splendid or grand
	the quality of elevation of mind and exaltation of character or ideals or conduct