Daggers less than one foot long.
The point to this style blade is in line with the spine of the blade. This leaves the point thick and strong. There are quite a few different variations of how tanto blades are designed. The way the front edge meets the bottom edge, whether at an obtuse angle or a curve is one difference. You will also find differences in the point being clipped or not and whether there is a chisel grind.
Dagger, usually under 10 inches. Many varieties and shapes.
a Japanese blade or small sword
a small dagger worn by Samurai as part of their three-piece set of armaments
knife (approx. 25cm)
9 inch fighting knife similar to the aikuchi, except with no hand guard.
Knife or dagger.
kind of wooden Japanese dagger
dagger or knife
a short, straight-bladed knife or shortsword. Used to describe any knife. Jitsuka practice knifework with rubber or plastic-bladed knives until purple belt when live blades are introduced into training (with swords as well)