Check the water pump drive shaft. If water is leaking from the hole beneath the drive, it's definitely a bad water pump seal and you can't repair them.
yes
It is not recommended, overheating can cause severe damage that cost a lot more than just replacing the pump.
Yes, some rare times the fins can come off the inside of the pump.
yes and no, if the water pump seals are bad antifreeze will leak from the weep hole on the water pump, but it is possible for the pump to go bad and not leak at all.
When a water pump is bad it will leak. There is a hole in the pump were water will leak out of.
It is rare for a water pump not to work however a water pump going bad will leak coolant and can be noisy from bad bearings.
If the relay is bad, then the fuel pump will not work.
It is possible to drive with a bad power steering pump. However, this is not a good idea because the wheel won't turn as it should.
The use of regular water creates sediments and bad function of the water pump bearing.
If a water pump is bad they usually leak coolant
It means that the gasket seal on the water pump is bad and you need to replace it before you drive the vehicle.