In a Nutshell: Think of
回应 (huíyìng) as the formal, broader cousin of the English word “respond.” It's not just for answering a direct question (that's
回答 - huídá). Instead,
回应 is about providing a considered reaction to something—a customer complaint, a reporter's inquiry, a public accusation, or a formal request. It can be used as both a verb (“to respond”) and a noun (“a response”), carrying a sense of official or serious acknowledgment.