dependency relationship; dependence relationship
Refers to a relationship in which one entity relies on another, used in technical, social, or everyday contexts.
The economic dependency relationship between the two countries is deepening.
We need to sort out the dependencies between the software components.
依存 is the general noun for 'dependence' or 'dependency'; 依存関係 specifically refers to the relationship aspect.
相互依存 means 'interdependence', emphasizing mutual reliance, while 依存関係 can be one-sided or mutual.
Compound of 依存 (いぞん, 'dependence') and 関係 (かんけい, 'relationship').