What is the Difference between a Web Application and Site Collection

WebApp vs Site collection.  This is a confusing issue: Basically a WebApp is a container for sites.  Each Web Application must contain at least one Site Collection. Each Site Collection can contain more than one site A site is usually shown as a tab in a Sharepoint page. This applies equally to Sharepoint, WSS (Windows Sharepoint Services), Sharepoint 2007, MOSS, Sharepoint Foundation 2010, and Sharepoint Server 2010. I found a great little table on THIS…