Kamon* or mon are symbols or crests which indicate a family or institution, and have been used in Japan for over 1,000 years. They incorporate elements such as stylized flowers, plants, animals, or everyday tools (e.g. wheels, pens, coins, or fans), and more than 200 patterns can be found all over Japan. In Shinto shrines, a mon is called a shinmon, whereas in Buddhist temples they’re called jimon.
*Kamon is a type of mon which particularly indicate a family. Ka literally means “a family”, whereas mon means “a symbol.”