Géothermie may well refer to both heating and cooling. As I said, the subsoil does not have to be very hot, only hotter than winter air temperatures, which means in summer it is likely to cooler than summer air temperatures and can be used for interior cooling.

Presumably monitoring refers to water levels, temperatures, pollution.

Further to puits/well, there may also be a distinction between open and closed-loop systems. Some systems extract water from the ground and inject it back into the ground - hotter or colder - after using it for heating or cooling. Closed-loop systems have pipes circulating through the subsoil and its water, using and reusing the same water contained in the pipe. "Wells" may ... well extract and reinject water while "boreholes" contain closed-loop pipes. Just an idea ...