A sedan has four doors and a traditional trunk. Like vehicles in many categories, they're available in a range of sizes.
A coupe has historically been considered a two-door car with a trunk and a solid roof. This would include cars like a Ford Mustang and Audi A5.
These are the sportiest, coolest-looking coupes and convertibles - low to the ground, sleek, and often expensive. They generally are two-seaters, but sometimes have small rear seats as well. Cars like Porsche 911 and Mazda Miata are typical sports cars.
SUV(Sport-Utility Vehicle)SUVs often also referred to as crossover tend to be taller and boxier than sedans, offer an elevated seating position, and have more ground clearance than a car.
Traditionally, the term "hatchback" has meant a compact or subcompact sedan with a squared-off roof and a rear flip-up hatch door that provides access to the vehicle's cargo area instead of a conventional trunk. Cars like Volkswagen Golf and Kia Stinger are such cars.