The difference lies in the nature of the web content. If it offers only information about a product or service, or it exists solely as an information hub, then you can categorize it as a website. Examples include news sites, wiki sites, most blogs, and corporate sites that contain mostly information only. Web apps, on the other hand, facilitate user interaction, or allow end users to input or manipulate information, perform transactions, or interact with other users. The most common web apps today are web email providers, e-commerce sites/online stores, and social media platforms. Note though that some websites may integrate a web application in their pages. For example: A website for a law firm that contains an online contact form in the Contact Us page.