Semantic analysis is the process of understanding the meaning and context of the keywords, rather than just their literal match. Semantic analysis helps you find related keywords, synonyms, variations, and long-tail phrases that can enrich your content and match the user's intent. For example, if your main keyword is "inbound marketing", semantic analysis can help you find keywords like "content marketing", "lead generation", "SEO", "buyer journey", and so on. You can use tools like Google's Keyword Planner, LSIGraph, or AnswerThePublic to perform semantic analysis.