You can use Pages to create word-processing and page layout documents. You can add any type of content (text, graphics, charts, and so on) to either, but there are differences in how you work with each type of document.
Word-processing: Used primarily to create documents that include mainly text, like reports or letters. These documents have a body text area where you type, and the text flows from one page to the next, with new pages created automatically as needed.
When you open a word-processing document (or template), you can just start typing. If you want to add text that’s separate from the main body text, you can add a text box. You can also add images, charts and other objects.
Page layout: Used primarily to create documents with a more custom design, like newsletters, books, or posters. A page layout document is like a canvas to which you add text boxes, images, and other objects, then arrange the objects on the page however you want.
When you open a page layout document (or template), there is no body text area; to add text you need to add a text box and type in it. New pages must be added manually.
Some Pages templates are designed specifically for word-processing, such as the Essay and School Newsletter templates and book templates in portrait orientation. Others are designed for page layout, such as the Tab Flyer, Museum Brochure, and book templates in landscape orientation.
To see whether a template (or document) is set up for word processing or page layout, open it. Click 
in the toolbar, then click the Document tab. If the Document Body checkbox is selected, it’s a word-processing document. To learn how to convert one type of document to the other, see Convert a word-processing or page layout document.