What is the difference between a web page and a web application?

Web page is usually a static HTML + CSS asset that shows data in a static manner, which means that data is not coming from a database or an API back-end setting. It is simply data embedded within HTML skeleton. Web application is dynamic, which means it serves data on the client side from a database or an API. Also, web application has interactive features that interact with the end user, like contact or login forms for example.