Answer:
Earthquake - Occurs when a fault slips
Fault - Brake in the crust
Himalayas - Caused by continents colliding
Subduction zone - When one plate goes under another
Explanation:
The earthquakes occur when a fault slips if we talk about earthquakes that occur at transform boundaries. Basically, the fault slips deeper because of the big pressure it causes on the crust below, and as it does and hits slightly lower it releases huge energy.
The faults form when the crust breaks, and this happens at transform boundaries. Depending on the pressure that will cause the crust to break, they can be caused by vertical or horizontal pressure.
The Himalayas are the tallest mountain chain in the world, and they have formed when two continental plates collided, those plates being the Eurasian and Indian ones.
Subduction zone is a zone where one tectonic plate moves below another tectonic plate, with the denser and lower (or simply much smaller one) goes below the less dense and higher positioned (or simply much larger one) plate.