I was just wondering, what is the difference between a web app and a website? Could tumblr be considered a web app? In terms of creating, which is easier to create, a website or a web app? I was planning on making a website and then I came across web apps so I was wondering, for example like facebook, tumblr, or twitter, are these web apps? Or are they considered websites? Or can they be considered both? Also, when it comes to creating websites and web apps, is there a difference? Like, for websites, you can use html but is there like a different way and process as to how you create a web app? Or is creating them exactly the same thing and done the same way? I know there is a difference when it comes to creating apps for Androids and iPhones, but is there a difference between web apps and websites? Thanks in advance!