Is THORChain a bridge?

Could you kindly elaborate on the nature of THORChain? Is it primarily considered a bridge in the realm of cryptocurrency and finance? If so, what specific functionalities does it offer that qualify it as a bridge? Also, how does it differ from other bridging solutions available in the market? Could you provide a concise yet comprehensive overview of its key features and how it contributes to the overall crypto ecosystem? Thank you for your insights.