Distance is a numerical measurement of how far apart objects or points are.
In physics, distance is a scalar quantity that refers to "how much ground an object has covered" during its motion.
The term "distance" can also mean:
1. Emotional separation between people (social distance)
2. The full length of a race (e.g. marathon distance)
3. In photography, the distance between camera and subject
4. In mathematics, the distance between two points in space