Bluetooth and Wi-Fi are both platforms that provide wireless communication. The difference between the two is mainly in what they are supposed to do and how they are used.
The main difference is that Bluetooth is primarily used to connect devices without the use of cables, while Wi-Fi provides high-speed access to the Internet. The short range and low power consumption of Bluetooth makes it most suitable for portable devices, Smart Health, Body Sensor Network (BSN), Smart Vehicle applications, etc. Wi-Fi is best suited for standalone devices and mobile applications, as it can implement TCP/IP. This allows the devices or nodes to connect directly to the Internet.
It is both the functionality and the type of use that determines whether Bluetooth or Wi-Fi will be the best solution in one.