magnificence vs excellence

magnificence and excellence both are nouns.

Word	Noun	Adjective	Verb	Adverb
magnificence	Yes	No	No	No
excellence	Yes	No	No	No

As nouns, excellence is a hypernym of magnificence; that is, excellence is a word with a broader meaning than magnificence:

magnificence: splendid or imposing in size or appearance
excellence: the quality of excelling; possessing good qualities in high degree

magnificence (noun)	excellence (noun)
the quality of being magnificent or splendid or grand	the quality of excelling; possessing good qualities in high degree
splendid or imposing in size or appearance	an outstanding feature; something in which something or someone excels