What are category keywords and how do they help in SEO? How do you use them to rank your site higher in the SERPs?
They're basically landing page keywords. For example, if you exclusively sell "Gibson musical instruments" on your Web site, that would be your main keyword. "Gibson acoustic guitars" would be a category keyword, while a specific brand of Gibson guitar (such as the "SJ-250 Monarch") would be your product page keyword.