Create a static page accessible from the menu in Joomla
1. Select “Add New Article” from “Control Panel”. 2. Type a Title, choose the Section and the Category. 3. Write the content, choose Published and Save the Article. 4. From the top menu select “Menus” and choose a menu where you want to put this article. 5. Click “New”. 6. Select “Internal link” then “Articles” and “Article Layout”. 7. Write the title of the link. 8. On the right you have to browse and select your article. 9. Press “Save”.
In Joomla component is an extra piece of software that has is own control panel to handle the different options within such a function. A module is to place some information on a certain position (determinded by the template) to show on the front-page. Plugins are mostly extra functions that create or deliver new back-end functions like a different WYSIWYG Editor.
In WordPress you see Plugins that will do the same functions as in Joomla, some give your more back-end controls like the Robots Meta plugin
Widgets are more like the Modules in Joomla, you can show pieces of information on a separate position, also determined by the Theme of your WordPress installation.