If you’re a Wi-Fi professional or have a CWNP certification, you probably already know the technical difference between WLAN and Wi-Fi. But these terms are sometimes used interchangeably, and this article by our friend Lee Badman does a nice job of explaining the difference in a “square is a rectangle but not all rectangles are squares” type of way. Plus, the article lists a couple of handy diagrams you can share with someone who might be learning networking terminology.
11/8 EDIT: TechTarget might try to make you create a free account to read this article, but I checked the link in incognito mode today without a TT account and it let me in. Thanks @steve.poirier for the heads up about the gated content!