What is keyword relevancy?
Keyword relevancy describes the importance of a META keyword in a web page's content. It is usually defined in terms of keyword density - the ratio of a keyword to other words on a page. Low keyword density means that a keyword isn't relevant to the page and may be treated negatively by search engines. High keyword density may indicate an unethical SEO practice known as keyword stuffing or spamming - repeating keywords frequently on a page simply to increase density, which may also be treated negatively by search engines.
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