enormousness vs grandness

enormousness and grandness both are nouns.

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

As nouns, enormousness and grandness are synonyms defined as:

enormousness and grandness: unusual largeness in size or extent or number

Other synonyms of enormousness include greatness, immenseness, immensity, sizeableness, vastness, wideness.

enormousness (noun)	grandness (noun)
unusual largeness in size or extent or number	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