A web page is part of a website and can be retrieved via a browser
A web page is a part of an internet presence which is accessible via an internet address – also called a domain. A web page is a single page and part of the online presence. It is accessible via a browser. A page is normally associated with an URL. Pages with frames are an exception, as several pages are loaded in a page. These frames are very rarely used nowadays. The start page of a website is called the homepage. Several web pages which are accessible under the same domain build a website.
Specific content is presented to the public on the web pages. This content is available around the clock and all over the world. A static web page is encoded in a markup language (HTML) and is located on a server. The web page is presented in an HTML file (content and structure) and a CSS file (layout). As soon as a browser calls up the web page from the web server where it is stored, the page is displayed according to the HTML and CSS coding.
Dynamic web pages refer to a content management system
Dynamic web pages are displayed in templates and do not contain any direct information on the content of the page or the layout. Instead, they refer to a content management system (CMS), which creates the database driven management, the structuring and the layout of the web page. As soon as a user calls up a web page, a browser based scripting language like PHP accesses the data stored in the content management system and displays the relevant information. Content management systems allow you to change all the web pages of a website with a single command. In addition, they usually contain an easy to use editor.
You can find further information on Wikipedia: https://en.wikipedia.org/wiki/Web_page