臼

• Domestic/Technology: A mortar (a heavy bowl used for pounding grain, minerals, or medicine). Frequently paired with 杵 (pestle) in contexts of agriculture, pharmacy, or ritual food preparation.
• Anatomy: A bone joint socket (e.g., the acetabulum of the hip), typically appearing in medical texts or descriptions of injury and dislocation.

• Noun: Used as a concrete noun for the tool or the joint.
• Attribute: May function as an adjective meaning "socket-like," "hollowed," or "concave."

The semantic range is split between two widely different domains (domestic/industrial vs. medical/anatomical). The translator should look for environmental markers to resolve the ambiguity.