overabundance vs superabundance

overabundance and superabundance both are nouns.

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

As nouns, overabundance and superabundance are synonyms defined as:

overabundance and superabundance: a quantity that is more than what is appropriate

Other synonyms of overabundance include overmuch, overmuchness.

overabundance (noun)	superabundance (noun)
a quantity that is more than what is appropriate	a quantity that is more than what is appropriate
the state of being more than full