scald
Hob, hot water tap, hot plate...
The elements possibly.
C for chaud - when there is a letter on the tap, which is rare. Taps are usually just colour-coded in France, red for hot and blue for cold. It is also standard to have the hot water on the left and the cold on the right.
Waiwera - Wai= water wera = hot
hot
because you take a bath with hot water
Possibly your hot water tank is rusting out on the inside and will need replacement soon.
How about hot chocolate.
2-3 usually. 1 each for hot and cold water and possibly a third for hot water going to dishwasher.
Every hot water heater I've seen has a regulating knob somewhere. Look for it,possibly under a cover.
Tropical
shot