The word 改装 is a compound verb formed by combining two individual characters: 改 (gǎi), meaning "to change" or "to alter", and 装 (zhuāng), meaning "to install", "to fit", or "to outfit". Structurally, it follows a common verb-complement pattern in Chinese where the first character denotes the action (改 - altering) and the second character specifies the domain or object of that action (装 - installation/equipment). Together, they create a new, specific meaning: "to refit", "to remodel", or "to convert", typically referring to modifying the equipment, structure, or appearance of something like a vehicle, room, or device. This formation exemplifies how Chinese compounds synthetically combine core semantic units to generate precise conceptual terms.