'Caucasus-related' originates from the word 'Caucasus,' which refers to a region situated between the Black Sea and the Caspian Sea, and the suffix '-related,' indicating association or connection.

The term 'Caucasus' has been used since ancient times to describe the mountainous region, and the suffix '-related' was added in modern English to denote association.

Initially, it referred to the geographical region, but over time it evolved to describe anything associated with the region.