A Japanese sword is one of several types of traditionally made swords from Japan. Bronze swords were made as early as the Yayoi period (1000 BC – 300 AD), though most people generally refer to the curved blades made from the Heian period (794 – 1185) to the present day when speaking of "Japanese swords". There are many types of Japanese swords that differ by size, shape, field of application and method of manufacture. Some of the more commonly known types of Japanese swords are the uchigatana, tachi, odachi, wakizashi, and tantō.
Classification by shape and usage
In modern times the most commonly known type of Japanese sword is the Shinogi-Zukuri katana, which is a single-edged and usually curved longsword traditionally worn by samurai from the 15th century onwards. Western historians have said that Japanese katana were among the finest cutting weapons in world military history, for their intended use.
Other types of Japanese swords include