WiFi Bridge,

A WiFi Bridge (or wireless bridge) is a networking device that connects two or more separate wired or wireless networks into a single, aggregate network using radio signals instead of physical cables. It essentially acts like an invisible Ethernet cable, passing data transparently over the air between geographically separated locations. How a WiFi Bridge Works

A standard WiFi router broadcasts internet signals in a 360-degree radius so multiple devices can connect. In contrast, a specialized hardware WiFi bridge uses two dedicated units equipped with high-gain directional antennas. Everything You Need to Know About Wireless Bridges – GZCOM