The Canal Zone was a 16-kilometer-wide strip of land on both sides of the Panama Canal.

The Frigid Zone is the region near the poles where the temperature is extremely cold.

The temperate zone has moderate temperatures and distinct seasons.

The zone of proximal development is the range of tasks that a learner can perform with guidance and support from a more knowledgeable individual.

When I'm studying, I often zone someone out and don't pay attention to what they're saying.

The establishment of a free-trade zone has led to increased economic growth.