相そう互ご関かん係けい

noun

mutual relationship; interrelationship; interaction

Refers to a two-way or reciprocal connection between people, groups, or things. Often used in formal or academic contexts.

• 両りょう国こくの相そう互ご関かん係けいは年ねん々ねん深ふかまっている。

  The mutual relationship between the two countries has been deepening year by year.

• この研けん究きゅうでは、遺い伝でんと環かん境きょうの相そう互ご関かん係けいを調しらべている。

  This research examines the interrelationship between genetics and environment.