The glossary the industry never gave you.

The first slice of any damage you're still responsible for, even with cover. It can run into the thousands, and it's exactly what the counter is trying to sell you protection against.

Collision or loss damage waiver. It reduces (rarely removes) what you owe if the car is damaged or stolen. It's a waiver, not insurance, and the difference matters when something goes wrong.

Get the car full, bring it back full, pay only for what you used. The honest policy. Its opposite, prepay a tank and return it empty, quietly charges you a premium for fuel you leave in the car.

Same brand on the sign, different company behind the counter. A franchised or licensed location is run by a local operator, which changes who actually handles a problem when you have one.

Permission, and paperwork, to drive the car into another country. Some routes are fine, some carry a fee, and some are flatly not allowed. Crossing without it can void your cover entirely.

The wholesale price a broker or agent actually pays, before any markup. It's the number the industry never shows the traveler, and the gap between it and your price is the whole game.

The four-letter code (like ECMR) that classifies a car by size, doors, transmission, and fuel. It's the industry's "standard," and everyone bends it, which is why the same car shows up in different sizes.

Our term for cars still listed for rent that stopped being manufactured years ago. A tell that a listing is a size guide, not a promise of the actual car you'll get.