Question

Distinguish between distance and displacement?

Answer 1

Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion.
Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

Answer 2

Distance is the total path covered by an object.
Thus, the distance travelled by an object is defined as the total path covered by an object.
It is a scalor quantity. It has only values and no direction. It cannot be zero.

Displacement ia the shortest distance between the initial position and final position of an object when an object changes it's position.
It has both values and direction and hence it is a vector quantity. It can be zero or negative