surplusage vs superabundance

surplusage and superabundance both are nouns.

Word	Noun	Adjective	Verb	Adverb
surplusage	Yes	No	No	No
superabundance	Yes	No	No	No

As nouns, superabundance is a hypernym of surplusage; that is, superabundance is a word with a broader meaning than surplusage:

Other hypernyms of surplusage include overabundance, overmuch, overmuchness.

surplusage (noun)	superabundance (noun)
a quantity much larger than is needed	a quantity that is more than what is appropriate