emphasis vs grandness

emphasis and grandness both are nouns.

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

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

Other hypernyms of emphasis include importance.

emphasis (noun)	grandness (noun)
intensity or forcefulness of expression	the quality of being magnificent or splendid or grand
the relative prominence of a syllable or musical note (especially with regard to stress or pitch)	unusual largeness in size or extent or number
special and significant stress by means of position or repetition e.g.	splendid or imposing in size or appearance
special importance or significance	a prominent status