- 剣 — sword
 - 剣道 — kendo
 - 真剣 — real sword; serious
 - 刀剣 — swords and blades
 - 短剣 — dagger
 - 剣先 — sword tip
 
A classic phono-semantic build: the left side 刂 marks the blade set; the right side (from the old form 劍) contributes sound and the idea of a double-edged weapon. That is why words with 剣 often relate to martial arts or edged tools (剣道, 短剣, 真剣).