The word 姿势 is formed through the conceptual combination of its two component characters: 姿, which carries the core idea of bodily form, appearance, or posture, and 势, which contributes the notion of momentum, tendency, or the outward manifestation of a posture. They are merged not by grammar, but by a fusion of meanings where 姿 provides the static image of a form and 势 infuses it with a sense of dynamic configuration or bearing. Together, they create a single, unified concept, "posture" or "pose", that is more specific and complete than either character alone, picturing both the visible arrangement of the body and the intentional or characteristic manner in which it is held.