The Chinese word 容许 (róngxǔ), meaning "to permit" or "to allow," is a compound formed through the combination of two synonymous or semantically related characters: 容, which carries meanings of "to hold," "to contain," or "to tolerate," and 许, which means "to permit" or "to promise." Together, they create a parallel or coordinative compound (并列结构) where each character reinforces and narrows the meaning of the other, resulting in a term that emphasizes the concept of granting permission or making something permissible, often with a nuance of tolerance or acceptance of a condition. This formation is a classic example of how modern Chinese frequently builds vocabulary by pairing characters with similar meanings to produce a precise and commonly understood binome.