Landon

After you’ve been using your website for a little while you probably have some categories, tags, or custom terms you once used, no longer use, but don’t want to wade through. WP Term Manager allows you to hide these terms.
The settings can be found under Tools > WP Term Manager. Select which terms you want hidden and click “Save Changes”. That’s it!

WP Term Manager

WP Term Manager helps users clean up or hide terms for easier administration.

Jordi Cabot

seriouswp

Once a site starts growing, it always ends up with repeated tags and categories. Sometimes, you create a new category when you were before using a tag. Or you just forget about old tags and en up writing new ones with a very similar name.
This damages the organization your content and the quality of the user navigation on your site.
This plugin helps you to quickly identify (too) similar tags and categories and gives you the option to merge them to simplify your site taxonomies.
In the Configuration page you can define how close term names should be to be considered duplicates.
In the Analysis page you can review the duplications and decide which ones to merge.

Serious Duplicated Terms

Ideal to remove some (quasi)duplicated terms and clean and sort out better your tags and categories

You'll be surprised to see how many duplicated terms you have!

Merge duplicated tags and categories to simplify and better organize the content and navigation of your site

WP Term Manager vs Serious Duplicated Terms