grandness vs largeness

grandness and largeness both are nouns.

Word	Noun	Adjective	Verb	Adverb
grandness	Yes	No	No	No
largeness	Yes	No	No	No

As nouns, largeness is a hypernym of grandness; that is, largeness is a word with a broader meaning than grandness:

Other hypernyms of grandness include bigness.

grandness (noun)	largeness (noun)
the quality of being magnificent or splendid or grand	the property of having a relatively great size
unusual largeness in size or extent or number	large or extensive in breadth or importance or comprehensiveness
splendid or imposing in size or appearance	the quality of being pretentious (behaving or speaking in such a manner as to create a false appearance of great importance or worth)
a prominent status	the capacity to understand a broad range of topics