The word 检查 is formed by combining two individual characters, each contributing a related meaning to create a unified concept. The first character, 检 (jiǎn), carries the core idea of examining, inspecting, or checking against a standard. The second character, 查 (chá), adds the dimension of investigating, looking into, or scrutinizing something closely. When placed together, their meanings overlap and reinforce one another, merging into a single, stronger term that conveys the action of conducting a thorough examination or review, as in a medical check-up or an inspection of work. It is a semantic compound where the whole meaning is directly derived from the combined sense of its parts.