For example, here are some quotes from Wikipedia and google in general:
Wikipedia wrote:Parking is the act of stopping and disengaging a vehicle and leaving it unoccupied.
A NO PARKING sign means you can stop to pick up/drop off somebody/something.
"No Parking" means you're not allowed to get out of your car and walk away from it to return at some later time.
"No Parking" means you cannot shut your car off and leave it unattended there.
If the driver stays in the car, especially with the engine running, it is "stopped" and not "parked."
And a lot more...
Don't hesitate to discuss about this so go ahead and post your opinions!