It often indicates a process of burning, destruction by fire, or intense heat.
Here are some examples:
* Holocaust: From the Greek "holos" (whole) and "kaustos" (burned), meaning "whole burnt offering." It's used to refer to the systematic, state-sponsored extermination of six million Jews by Nazi Germany during World War II.
* Incinerate: To burn something completely to ashes.
* Caustic: Refers to a substance that burns or corrodes.
* Pyrocaust: A method of burning a corpse in ancient Rome.
The suffix "-caust" can be used in various contexts to describe the burning or destruction of something.