The word "晚安" is formed by directly combining two characters: "晚", which conveys the concept of "evening" or "night", and "安", which carries the meaning of "peace" or "tranquility". Together, they merge semantically to create a phrase that literally signifies "peace at night", which over time has become a fixed expression used as a courteous wish for a restful and peaceful evening, illustrating how Chinese often builds meaning through the intuitive pairing of ideographic characters.