姘居

shì shí hūn yīn bù tóng yú fēi fǎ tóng jū fēi hūn tóng jū pīn jū chóng hūn děng xiāng sì de gài niàn

事实婚姻不同于非法同居、非婚同居、姘居、重婚等相似的概念。

So it is different from a illicit cohabitation, a unmarried cohabitation, a cohabitation that the married man and woman live illicitly as husband and wife, a bigamy and so on similar concept.