There are a few types of keyword tools, depending on what you need. Some focus on search volume, like Google Keyword Planner, which shows how often people search for a term. Others are great for competitor analysis, like SEMrush or Ahrefs, where you can see what’s working for your competition. Then, there are tools like AnswerThePublic for brainstorming long-tail keywords, and trend tools like Google Trends to check what’s currently trending.