expansiveness vs grandness

expansiveness and grandness both are nouns.

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

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

expansiveness: a quality characterized by magnificence of scale or the tendency to expand
grandness: splendid or imposing in size or appearance

Other hypernyms of expansiveness include impressiveness, magnificence, richness.

expansiveness (noun)	grandness (noun)
a friendly open trait of a talkative person	the quality of being magnificent or splendid or grand
a quality characterized by magnificence of scale or the tendency to expand	unusual largeness in size or extent or number
	splendid or imposing in size or appearance
	a prominent status