Difference between Project and Web Site

Difference between Asp.Net Web Application(Project) and Asp.Net Web Site(Website)

• In Asp.Net Web Application at run time you cannot add/change code. While you can
  do in Asp.Net Web Site.
• In Asp.Net Web Application you cannot publish single dll of each page while in Asp.Net
  Web Site you can publish dll of each page. This is helpful when there is any change
  in one page then you have to upload dll of that page instead of complete application
  dll.
• In Asp.Net Web Site each file that you exclude is renamed with an exclude keyword
  in the filename. In the Asp.Net Web Application the project just keeps track of
  which files to include/exclude from the project view without renaming them, making
  things much tide.