first-rateness vs excellence

first-rateness and excellence both are nouns.

Word	Noun	Adjective	Verb	Adverb
first-rateness	Yes	No	No	No
excellence	Yes	No	No	No

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

first-rateness: The property of being of exceptionally good quality.
excellence: the quality of excelling; possessing good qualities in high degree

first-rateness (noun)	excellence (noun)
The property of being of exceptionally good quality.	the quality of excelling; possessing good qualities in high degree
	an outstanding feature; something in which something or someone excels