Keywords are specific words or phrases that capture the main ideas of a piece of content. They are essential for search engines like Google to understand what a webpage is about. By using relevant keywords, content creators can improve their visibility in search results, making it easier for users to find their information. In digital marketing, keywords play a crucial role in Search Engine Optimization (SEO). Businesses research and select keywords that potential customers might use when searching for products or services. By optimizing their content with these keywords, companies can attract more visitors to their websites and increase their chances of making sales.