The Chinese word 刀刃 (dāorèn, "knife blade") is a compound formed through a straightforward modifier-head relationship. It combines the character 刀 (dāo), meaning "knife," with 刃 (rèn), meaning "blade" or "edge." Structurally, 刀 acts as a modifier that specifies the type of blade, indicating it is specifically the blade *of a knife*, rather than, for instance, a sword (剑刃). This formation is semantically transparent and logical, where the first element defines the category of the second, creating a precise term for the cutting edge of a knife.