imperialness vs grandness

imperialness and grandness both are nouns.

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

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

imperialness: The quality of being related to an empire, emperor, or empress.
grandness: splendid or imposing in size or appearance

Other hypernyms of imperialness include impressiveness, magnificence, richness.

imperialness (noun)	grandness (noun)
The quality of being related to an empire, emperor, or empress.	the quality of being magnificent or splendid or grand
	unusual largeness in size or extent or number
	splendid or imposing in size or appearance
	a prominent status