A witch hunter is a someone who hunts witches.
They usually travel to swamps to find witch huts, then burn those huts to the ground. They capture the witches and put them on trial.
Trials take place in a witch hunting stand. There are two types of stands, a drop execution, and a dropping execution.
drop executions are a glass container in which sand (or anvils) is dropped on the witch. It was stopped because it took too long (and anvils were uneffective).
Dropping (or Pit) executions
These are a wooden area with a lever and a trap door. The witch was placed on the trap door, and dropped into a bottomless pit.