3. "Sports car"
This one's easily the most controversial, because everyone wants to drive a sports car and all the manufacturers want you to think that's what you paid for. But here's a little test: did your car come with a backseat that can fit a fully grown human being? Congrats! You don't own a sports car. That means a Camaro or an M3 can never truly be a sports car. Is your car as lightweight as realistically possible, with its first, second, and third emphasis on driving feel and very little thought given to luxury or even power? OK, you have a sports car.
Does a rose by any other name smell as sweet? Of course, but that doesn't stop people from being offended at the thought of owning a non-sports car.