Terminology
Content Item – Represents the content that will show in the content zone including its look and feel (Widget) and data (content data)
Content Zone – Used to define an area of the page that will hold dynamic content
Page Field – A page specific value that can be entered for a page type
Page Type – Defines the dynamic fields that can be customized for a page and used by a template
Template – The Thymeleaf HTML file
Widget – A combination of HTML, CSS, and JS that is used to render the data inside of a given Content Item