A replica is a copy of something that looks very much like the original. When a museum can't display a fragile ancient artifact, they might show visitors a replica instead: a carefully made copy that captures every detail. The real treasure stays safely protected while people can still see what it looks like.

Replicas differ from cheap knockoffs or rough imitations. A good replica reproduces the original so accurately that you might need to look closely to tell them apart. Model builders create replicas of famous ships or airplanes, matching the proportions, colors, and details of the real thing. Movie studios make replica props so actors can use swords or artifacts without risking damage to valuable originals.

In science, researchers create replicas of experiments to verify results. In everyday life, you might see replica jerseys of famous athletes or replica dinosaur skeletons in science museums.

A well-made replica can be educational and valuable in its own right. A replica of the Wright brothers' first airplane helps us understand their achievement, even though it's not the actual historic plane.