a large crack in the ground or in rock

The stream had cut a deep rift in the rock. 溪流在岩石上冲刷出一条很深的沟。

a serious disagreement that separates two people who have been friends and stops their friendship continuing

The marriage caused a rift between the brothers and they didn't speak to each other for ten years. 这桩婚姻致使兄弟之间的关系出现裂痕，彼此10年都没有说话。