The word 感应 is formed through a deeply conceptual combination where the first character 感 represents "to feel", "to sense", or "to be affected", and the second character 应 means "to respond", "to answer", or "to correspond". Together, they create a single, unified concept of a dynamic, two-way process: one entity's action or presence senses and affects, and the other entity reacts and corresponds, forming a complete cycle of mutual influence, resonance, or induction, as seen in electromagnetic induction or a spiritual connection.