noun, expression, particle, verb, punctuation · the connection or association between people, groups, or things

这种合作关系对双方都有利。

verb, noun, expression · to involve, affect, or have an impact on something

这项政策关系到每个人的利益。

noun, expression, verb · to involve or have an impact on; to bear on (usually used as a verb in this context, though tagged as noun in some systems)

这事关系重大，我们必须认真对待。

noun · personal connections or social networks used for influence or benefit

他是通过关系找到这份工作的。