A mutual relationship in which two or more things affect or are related to each other; interrelationship/interaction.
経済と政治の相互関係を分析する必要がある。
It is necessary to analyze the interrelationship between the economy and politics.
気候変動と生態系の相互関係は複雑だ。
The interaction between climate change and ecosystems is complex.
研究では遺伝と環境の相互関係がテーマだった。
The study focused on the interaction between genetics and the environment.