All cars are automobiles, but not all automobiles are cars.
Another analog to the original is to say “a bank account and a checking account are different things”. While a checking account is a kind of bank account, not all bank accounts are checking accounts.
I don’t realise the difference between these two either.
Trucks aren’t cars, but they are automobiles
Does this fit within the broad category if we stretch the idea ?
Yup, no stretching required, that is also an automobile but not a car.
All cars are automobiles, but not all automobiles are cars.
Another analog to the original is to say “a bank account and a checking account are different things”. While a checking account is a kind of bank account, not all bank accounts are checking accounts.