In the context of SEO (Search Engine Optimization), CF stands for "Citation Flow" and TF stands for "Trust Flow." These metrics are part of a tool called Majestic SEO, which is used to analyze the quality and authority of websites. Citation Flow (CF) is a metric that measures the quantity of links pointing to a particular webpage. It provides an indication of the popularity or influence of a webpage based on the number of links it has. Trust Flow (TF), on the other hand, measures the quality and trustworthiness of the links pointing to a webpage. It takes into account the authority of the websites that link to a particular webpage. Websites with a higher Trust Flow are considered more reliable and trustworthy.