why is it?

Question

that when u transport something on a ship. its called cargo. but transporting it in a car its called a shipment?

Answer 1

Stop wasting our time with tired internet stuff like this.

Answer 2

I agree with the previous answer. If you are really bored, don't try and show how witty you are when these terms are interchangeable. You are wasting perfectly good space trying to be the wit.