For a list of IT networking terms, and descriptions, check out one of the many sites online. Like this one, geeksforgeeks.org. If you still have questions, come back with more details.
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a Server is an instance of a computer program/ device that accepts and responds to requests made by another program, known as a client.
While a bridge is built to connect the two land masses. In computer networking, a bridge serves the same purpose. It connects two or more local area networks/ LANs together. A bridge can transfer data between different protocols.
But don't confuse bridge and router.
Now analyze the two definitions & you can get functions of the both.