@mahler123 @knock1 I am not confused. I've only been working with Ethernet for 40 years, longer than Wikipedia (founded in 2001) or Tech Target have even existed. I started working with WiFi (wireless Ethernet) in 2000 when I created the wireless strategy for a very large Seattle-based coffee company as a means of connecting kiosks back to the main store, and then as local WAPs to encourage customers to stay longer (and buy more than coffee to go).
Wi-Fi is a type of wireless Ethernet. Ethernet is a wired technology that connects devices in a local area network (LAN). WiFi technology uses radio signals to transfer data and wired Ethernet connections use a physical twisted pair ethernet network cable. Any other differences between these connections arise from this basic difference. What they share is the use of an Ethernet frame, a data link layer protocol data unit, and the use of underlying independent Ethernet physical layer transport mechanisms, one being wired, the other wireless. In other words, a data unit on an Ethernet link transports an Ethernet frame as its payload, regardless of the underlying physical media. Above that are the Layer 3 protocols like the now ubiquitous TCP/IP. You may want to read up on the OSI 7-Layer network model to help you understand these basics.