The word 妨碍 is formed through the conceptual combination of two characters, each contributing a related meaning of obstruction. The first character, 妨 (fáng), originally depicted the idea of a woman causing harm or hindrance, carrying the core sense of "to impede" or "to interfere with". The second character, 碍 (ài), means "obstacle" or "blockage", often associated with a physical or mental hindrance. By compounding these two synonyms, the word 妨碍 is created, intensifying and completing the abstract notion of "to hinder" or "to obstruct", where the whole meaning emerges from the reinforced overlap of its parts. This is a standard process in Chinese for forming disyllabic words that express a unified, often more nuanced, concept.