eclat vs grandeur

eclat and grandeur both are nouns.

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

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

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

eclat (noun)	grandeur (noun)
brilliant or conspicuous success or effect	the quality of being magnificent or splendid or grand
ceremonial elegance and splendor	the quality of elevation of mind and exaltation of character or ideals or conduct
enthusiastic approval