The word 巧合 is formed by combining two characters whose core concepts visually and conceptually merge to create its meaning. The first character, 巧, originally depicting a skillfully crafted tool, carries ideas of ingenious precision and unexpected aptness. The second, 合, visually representing a lid closing snugly on a container, conveys perfect joining or fitting together. Thus, the compound visually evokes the image of separate, unrelated elements (events, timings, or ideas) coming together with an unexpectedly perfect and fitting precision, as if by ingenious design, directly encapsulating the essence of a "coincidence".