The word 家庭 is formed through the conceptual fusion of two foundational characters: 家, which originally depicted a pig under a roof, representing the core unit of a household or home, and 庭, which signifies a courtyard, hall, or the open space before a main hall. Together, they create a compound that extends beyond a physical house (家) to encompass the entire domestic sphere, including both the private living quarters and the shared communal space (庭). This combination visually and notionally constructs the idea of a family as a complete entity, enclosed, structured, and defined by both its intimate bonds and its shared physical and social environment.