Bluetooth

This is like similar to semantic context when we talk about Wifi.

Bluetooth is a frequency-hopping radio technology that transmits data packets within the 2.4 GHz band. These packets exchange through one of 79 designated Bluetooth channels (each of which is 1 MHz in bandwidth).

Layman’s Terms: Bluetooth is the wireless connection that lies between your phone and the device you’re connected to. With this technology, data exchanges over a short-range without the need for wires.