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WordPress pages are meant for timeless content while on the other hand, posts are dated with a published day. Categories and Tags are used to organize your posts. This is not available for pages as pages are automatically organized hierarchically. Unlike posts, pages only have a default template where else you can have custom posts. There a good number of differences of pages and posts in WordPress. You can check this URL, or even head to Google and search WordPress Posts vs Pages
Hope that helps. If you have any further question(s), please let us know. Thank you.
