A cohort is a group of people who share a common characteristic or experience within a defined period (e.g., are currently living, are exposed to a drug or vaccine or pollutant, or undergo a certain medical procedure).
A rift valley is a lowland region formed by the interaction of Earth's tectonic plates. This small rift valley has a typical formationâlong, narrow, and deep. It was formed by the Thingvellir rift, where the North American and Eurasian tectonic plates are tearing, or rifting, apart over a hotspot on the island of Iceland.
chasm. 1. a yawning fissure or deep cleft in the earth's surface; gorge. 2. any marked gap or break. 3. a wide divergence of opinions, interests, etc., esp. producing a breach in relations.hasm. n. 1. A deep, steep-sided opening in the earth's surface; an abyss or gorge. 2. A sudden interruption of continuity; a gap. 3. A pronounced difference of opinion, interests, or loyalty.