Component
Components are pieces of content. Components may appear in different forms on different webpages.
A Component is a piece of content stored in the Content Manager database. On the website, the same Component may appear multiple times on different webpages, or even on the same page.
Components have fields in which different parts of the Component can be specified. For example, a news article Component may have a field for the title of the article, a field for an optional image to display, and a field for the article's body text. A webpage does not always display all fields of a Component. For example, on a news article overview page, only the title of each Component might be displayed. You can edit the fields in the browser window.
Different webpages may visualize the same field differently. For example, an overview page may display the title field as a medium-sized line of text that is a clickable link, whereas a full-article page may display the same title field as a large-sized line of non-clickable text. How a Component is visualized, and how much of it is displayed, depends on the Component Template you associated with the Component. Very often, the webpage dictates which Component Templates you can and cannot use with a Component.
In some cases, you can move Components around on the webpage. You can also remove a Component from the webpage altogether. This does not mean that the Component is permanently destroyed.