Do you know anything about WordPress Custom Fields?
Did you know that there are a lot of hacks and tutorials that cover WordPress custom fields?
Custom fields are forms of meta-data that lets you store arbitrary information with each of your WordPress custom post. It is a single most powerful component of WordPress posts and content types. This meta-data is handled with key/value pairs. This is the one that identifies a specific field and therefore, content should stay at the same for all posts regardless of how you use the same key in different types of post.
Read the rest of the post here: http://www.wpbeginner.com/wp-tutorials/wordpress-custom-fields-101-tips-tricks-and-hacks/