1) Japanese sword type 
A 小太刀 atau こだち, literally translating into `small or short tachi (sword)`, is one of the traditionally made Japanese swords (nihontō) used by the samurai class of feudal Japan. Kodachi are from the early Kamakura period (1185–1333) and are in the shape of a tachi. Kodachi are mounted in tachi style but with a length of less than 6.....
Short tachi blades 2 feet or less. used in Kamakura times.