wi-fi

Definition:

Wi-fi is a name for the popular wireless technology used in homes, mobile phones, and some game systems. A common use of wi-fi for noobies is to roam wirelessly around their house or favorite coffee shop with their laptop connecting to a wireless home network or a public wi-fi hotspot.

Here's a word you may not know...

server

Servers come in many flavors but the main thing to know is that a server is usually a high-performance, large-capacity computer. Other computers, called clients, usually connect to a server to retrieve files, view web sites, request email along with many other functions.