Why is it called cargo when you’re transporting by ship, and why when you’re transporting by car is called shipment?

Think of cargo as something that is currently being shipped. And take shipped to mean "carried by some type of long-distance conveyance" (not limited to actual ships). A shipment usually refers to the process of moving goods. ... Cargo has a possessive implication as in the cargo of a ship or a truck's cargo

where are the sentences? post a picture