The word "边框" is formed by combining the character "边", which means "edge" or "border", with the character "框", which means "frame" or "enclosure". Each character acts as a semantic component, where "边" conveys the notion of a periphery or limit, and "框" conveys a structural boundary, often implied to be rigid or defining. Together, they create a compound word that specifically denotes the physical border or frame surrounding an object, such as a picture or window.