Ethernet refers to a internet cable where as a wifi refers to a wireless connection.The world is going wireless .Everyone’s first choice is Wifi to get connected with internet. Wi-Fi is more convinent than an ethernet cable where it need a cable connection. We cannot connect a cable connection to a mobile phone ,so wifi is better for mobile phones.Wifi is convenient but slower than ethernet speed.
Wi-Fi vs Ethernet :Speed
Ethernet is faster than the wifi .Wi-Fi standards like 802.11ac and 802.11n offer maximum speeds of 866.7 Mb/s and 150 Mb/s, respectively.Similarly, there are standards for Ethernet cables like cat-5, cat-5e, cat-6 cables etc.A wired ethernet can offer upto 10 Gb/s if you use cat-6 cables.The fact was that ethernet is faster in speed than a wifi.
Wi-Fi vs Ethernet :Interference
Number of things can affect a wireless signals, from other devices to physical objects.This interference can cause dropped signals, higher latency and even lower speeds at times. There are no such effects in the ethernet cable.
Wi-Fi vs Ethernet:Security
It is easier to hack wifi network getting a physical acess to physical cable. Wi-Fi needs additional settings like beacon packets management, broadcast, WPA types security etc.