What is the difference between labels and tags?
Tags are words (or combinations of words) you can use to add more context to Support tickets. You may also apply tags to users and organizations (see Adding tags to users and organizations) for tracking purposes, or to manage business rules for specific sets of users. See Using tags for more information on potential usage of tags in Support.
Labels are words (or combination of words) you can utilize on Guide articles to improve the search experience of articles. Labels are indexed for search with a little less weight as the article title, but multiple labels with similar words can outweigh the title and body of the article, so use labels carefully to balance your search results. See How do I add labels to my articles? for instruction on how to add labels to your articles.