Same language. Different potatoes!

In British English:
Crisps are the thin, crunchy snacks you buy in a packet.
Chips are the fried potatoes you might eat with fish.

In American English:
Chips are the crunchy snacks.
Fries are the fried potatoes.

💡 Quick tip:
Don’t worry too much about choosing the British or American word. Context usually makes your meaning clear.

And in international English, people encounter both versions.