splendor vs grandness

splendor and grandness both are nouns.

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

As nouns, splendor and grandness are synonyms defined as:

splendor and grandness: the quality of being magnificent or splendid or grand

Other synonyms of splendor include brilliance, grandeur, magnificence, splendour.

splendor (noun)	grandness (noun)
a quality that outshines the usual	the quality of being magnificent or splendid or grand
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