You really don't have much experience in philosophy of language do you? It's notoriously hard to pin down the edges of such terms, even something like car or table.
Is a Reliant Robin a car or a tricycle? If it's a car, why aren't other tricycles? What about a side-car of a motorcycle? What about an APC? What's the distinction between a flying car and a plane?
Is a Reliant Robin a car or a tricycle? If it's a car, why aren't other tricycles? What about a side-car of a motorcycle? What about an APC? What's the distinction between a flying car and a plane?