| get_adjacent_post() | Gets the object of the adjacent (next or previous) post. |
| get_adjacent_post_link() | Gets the adjacent (next/previous) post link (HTML tag A). You can specify limitations on the elements of taxonomies (categories, tags). Can be either next post link or previous. |
| get_boundary_post() | Retrieves the first or last post of the site (by publish date). |
| get_next_post() | Retrieves the next post that is adjacent to the current post. Return post object. |
| get_next_post_link() | Gets a link (tag A) to the next post relative (by date) to the current post. |
| get_previous_post() | Retrieves the previous post that is adjacent to the current post. Return post as object. |
| get_previous_post_link() | Gets a link (tag A) to the previous post relative (by date) to the current post. |
| get_the_post_navigation() | Gets the navigation links (HTML) to the next and previous posts. Uses on a single post page: is_singular(). |
| next_post_link() | Displays a link (tag A) to the next post relative (by date) to the current post. |
| previous_post_link() | Displays a link to the previous (by date) post. The function must be used on separate pages (of the is_single() type). |
| the_post_navigation() | Displays the HTML block of links to the next and previous posts. Uses on a single post page: is_singular(). |