interdependence vs interdependency

interdependence and interdependency both are nouns.

Word	Noun	Adjective	Verb	Adverb
interdependence	Yes	No	No	No
interdependency	Yes	No	No	No

As nouns, interdependence and interdependency are synonyms defined as:

interdependence and interdependency: a reciprocal relation between interdependent entities (objects or individuals or groups)

Other synonyms of interdependence include mutuality.

interdependence (noun)	interdependency (noun)
a reciprocal relation between interdependent entities (objects or individuals or groups)	a reciprocal relation between interdependent entities (objects or individuals or groups)