There are a number of maintenance activities that you may need to perform throughout the life cycle of your SharePoint term store. These changes might be necessary as the organization implements changes to business units, departments, products, or services. Common tasks in a term store include creating, copying, reusing, pinning, merging, deprecating, moving, and deleting terms.

All of these tasks are performed within the Term Store management tool, which can be accessed by navigating to the SharePoint admin center, selecting Classic features, and then clicking Open in the Term store section: