equivalent vs equivalence

equivalent and equivalence both are nouns.

Word	Noun	Adjective	Verb	Adverb
equivalent	Yes	Yes	No	No
equivalence	Yes	No	No	No

equivalent (noun)	equivalence (noun)
the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen	qualities that are comparable
a person or thing equal to another in value or measure or force or effect or significance etc	essential equality and interchangeability
	a state of being essentially equal or equivalent; equally balanced

equivalent (adjective)	equivalence (adjective)
being essentially equal to something