That's what it does, but that doesn't tell us what it is. Defining a car as "a vehicular conveyance that helps people get from A to B" is similarly technically

That's what it does, but that doesn't tell us what it is. Defining a car as "a vehicular conveyance that helps people get from A to B" is similarly technically correct, but provides little help to the reader in determining if the thing they're looking at is a car or not.