ThePilot

This plugin will create categories for pages only, different from the categories assigned to posts. It will also list these page-only categories on the WordPress Dashboard, so you can sort pages by category on the dashboard.

Create Categories For Pages Only

This plugin will create categories for pages only, different from the categories assigned to posts.

Amit verma

Updates in version 1.3.2: 
1. Added pagination in auto-insertion. Number of posts per page are be displayed from “Blog pages show at most” settings from “Reading” option page. Use following CSS classes to change styles. 
.navigation 
 .alignleft 
 .alignright
Updates in version 1.3.1: 
1. Exclude Category IDs option on Widget.
Updates in version 1.3: 
1. Widget to display pages from the Page’s category.
Updates in version 1.2.3: 
1. Bug fixes. 
2. Display categories on Edit Pages page.
Updates in version 1.2.2: 
1. Do not auto-insert posts if the Page isn’t mapped to any Category. It used to insert all the posts if the Page isn’t mapped to any Category.
Updates in version 1.2.1: 
1. Improved compatibility with Menus in WordPress 3. Thanks to Joe http://joesutthoff.com
Updates in version 1.2: 
1. Compatible with WordPress 3
Updates in version 1.1: 
1. Option for auto-insertion of the Pages on Category pages 
2. Option for auto-insertion of Posts on the Pages which belong to the same category
Map Categories to Pages displays the category box on the “Edit Page” page. By default, Every page in wordpress is mapped to the default category but this plugin gives the option to select categories for a pages.
This plugin uses the same category box which displays on the edit post page from the core of WP.
It is useful when you want to display posts from certain categories on the pages. You will have to edit your page template to encorporate categories. Follow the standard wordpress categories syntex used for posts. Take a look at https://codex.wordpress.org/Function_Reference/get_the_category and https://codex.wordpress.org/Template_Tags/the_category.

Map Categories to Pages

Displays categories box on "Edit Page" page.

Create Categories For Pages Only vs Map Categories to Pages