They are two different things. ADSL is the technology by which your modem/router connects to the internet, i.e. the port on the modem that plugs in to the phone line. WPS is a function of Wi-Fi, i.e. the way your wireless devices talk to your modem/router. Most modem/routers will allow you to disable WPS.
WPS refers Wi-Fi Protected Setup lets you join a secure WiFi network without selecting the network name and entering the password. whereas, ADSL Refers to Asymmetric digital subscriber line is a type of digital subscriber line (DSL) technology, a data communications technology that enables faster data transmission over copper telephone lines than a conventional voiceband modem can provide. ADSLdiffers from the less common symmetric digital subscriber line (SDSL). pandasbo