The word 一面 is formed through the conceptual combination of its two constituent characters: 一 (yī), meaning "one", and 面 (miàn), whose core meaning is "face" or "surface". It constructs its meaning visually and spatially, where 面 acts as a metaphorical plane or facet, and 一 specifies a single, particular one of these planes. Thus, the term conceptually originates from the image of one side or one visible aspect of an object or situation, inherently suggesting that other sides or aspects exist, forming a complete picture from which this one face is isolated.