What is a "Website"?
A website is a group of globally accessible, interlinked web pages which have a single domain name. It can be developed and maintained by an individual, business or organization. The website aims to serve a variety of purposes.
Websites, accessible through browsers, display useful content. They are navigable and can present digital content, images, video, and audio. Websites (vs web apps) are static, meaning the content doesn’t update dynamically.
BrowserLondon.com Blog (Oliver Creswell 8/06/2020):
If users intend to simply access information or gain understanding, then you have a site. If they intend to accomplish some task that requires inputs and responses, then you have an app.
Website or Web App?
These explanations of how a website is different from a web app apply in general. The fact is though, there's no absolute difference between a website and a web app. I can pay for a membership on a no-code platform like Bubble, create an app with both static and dynamic pages, and add a custom domain name for that app.
That means users can go to "www.myapp.com", read articles, news blurbs, healthcare tips or other information and also run an app that allows them to enter, update and chart their calorie intake. I think that's essentially a website - which means, yes, you can build yourself a website on a no-code app building platform. Apps and websites don't have to be two separate things.