eclat vs grandness

eclat and grandness both are nouns.

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

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

Other hypernyms of eclat include brilliance, grandeur, magnificence, splendor, splendour.

eclat (noun)	grandness (noun)
brilliant or conspicuous success or effect	the quality of being magnificent or splendid or grand
ceremonial elegance and splendor	unusual largeness in size or extent or number
enthusiastic approval	splendid or imposing in size or appearance
	a prominent status