Definition of Distance :
The actual path or length travelled by a object during its journey from its initial position to its final position is called the distance.
Distance is a scalar quantity which requires only magnitude but no direction to explain it.
Example : Ram travelled 65 km. (Distance is measured by odometer in vehicles.)
Definition of Displacement :
The shortest distance between the initial position and the final position of a moving object in the given interval of a time.
Displacement = Finial Position - Initial Position
Displacement is a vector quantity requiring both magnitude and direction for its explanation.
Example, Ramesh travelled 65 km south-west from Clock Tower.
Displacement can be zero (when initial point and final point of motion are same) Example, circular motion.