The document discusses keywords research for optimizing Amazon product listings. Keywords are the words or phrases customers use to search for products online. There are primary keywords and long-tail keywords which are phrases. By including relevant keywords in listings, products can rank higher in search results. Proper keywords research identifies search terms customers use to find a product and increases potential sales. Tools like Helium 10 can uncover thousands of keyword opportunities to improve visibility, boost rankings, inform PPC campaigns, and drive sales velocity.