The word 拼图 (pīntú) for "jigsaw puzzle" is formed by directly combining two meaningful characters: 拼 (pīn), which means "to piece together" or "to assemble", and 图 (tú), which means "picture" or "diagram". It is a perfectly logical and visual compound: the first character describes the action required, and the second character specifies the object of that action, creating the immediate conceptual image of "assembling a picture", which is the essence of a puzzle.