Japanese sword (にほんとう, Nihontou), in Japan is also known as sword (かたな, Katana). Known as the plane crushed the reinstated dark light pattern edge, one of the world's three famous blade. Based on shape, dimensions are divided into very sword, sword, poor threat (threat), knife, etc. Broad and also includes a scroll, razors, swords, guns, etc. Since ancient times as a weapon and is known for its beautiful shape, many swords are treated as fine art collection, and put in his mouth the symbolic meaning of the spirit of the Samurai. Cutters of different with other countries, Japan swords outside the biggest feature is the decorative in shape cutter body itself to demonstrate artistic. In Japan swords were called "swords", "Cutler", or "sword forging."