Tegestology, also known as coaster collecting, is a popular hobby among enthusiasts who collect bar coasters from different establishments. However, there are many other words that refer to this type of hobby or the objects being collected. For example, breweriana is the collection of objects related to beer, including coasters, bottles, and cans. Some people refer to coaster collecting as matology, which is the study of mats or pads. Others might call it beeriana, or even coastermania. Regardless of what it's called, collecting these tiny pieces of advertising history can provide a fun and fulfilling pastime for many hobbyists around the world.