The word 退休 is formed by combining two characters, each contributing a core idea to create a new, unified concept. The first character, 退 (tuì), carries the meaning of "to retreat", "to withdraw", or "to step back". The second, 休 (xiū), means "to rest" or "to cease". When placed together, they create a vivid conceptual sequence: one first withdraws from their position or occupation and then enters a state of rest, perfectly encapsulating the life stage of retirement.