A chasm is a deep crack or opening in the earth's surface, like a narrow canyon with steep walls dropping far below. Imagine standing at the edge of a gorge where you can barely see the bottom: that's a chasm. Mountain climbers sometimes encounter chasms they must find ways to cross or climb around.

The word also describes a huge difference or gap between people, ideas, or groups that seems almost impossible to bridge. When two friends have a serious falling-out and stop speaking to each other, you might say there's a chasm between them. If your math skills are years behind where they should be, there's a chasm between your current abilities and grade-level work.

A chasm suggests something more dramatic than an ordinary gap or difference. When two political parties have a chasm between their views, they can't even agree on basic facts, making compromise seem nearly impossible. The word captures that sense of distance and difficulty: bridging a chasm, whether literal or figurative, requires real effort and often some courage.