Borehole is a well-defined term used in the construction industry and geology to represent a narrow and deep hole drilled into the ground for exploration or extraction purposes. However, there are several other synonyms that are used interchangeably in different parts of the world. Some of the most commonly used synonyms for borehole include water well, artesian well, shaft, sunk, driller, bore, gusher, cistern, dug well, and many more. The selection of a particular synonym depends on the purpose for which the hole is drilled, the geology of the site, and several other factors. In general, borehole remains the most commonly used term that is widely accepted all over the world.