Question

defination of
motion
displacement
distance 
in physics language.

Answer 1

motion
everything in the universe moves it might be only a very small amount of moment but it moves...so motion is the change in position of the object with respect to time and can also be said as to move something or to change the place of something

displacement
it is the shortest distance covered from intial [position to final position.it is a lenght of imaginary straight path

distance
distance and the displacement are the quantites that may seem to mean the same and yet are different...distance is the scalar quantity that how much a object has covered

Answer 2

Motion - When an object is moving with respect to time it is called motion.
Displacement- shortest distance from final position to the initial position 
Distance- total distance covered by an object