If web page content can be thought of as the “mash” in the distilling process, the “still” separates elements from within the “mash” (alcohol) and separates that for collection. The alcohol represents a singular component of the mash that is presented to the user.
From the overall message of web content the keywords can be “distilled” to small, singular elements that are important parts of the overall message. For a page that contains Admissions content for first year students, some unique keywords could be “miami university, undergraduate admissions, undergraduate, first year, first-year, foundation year” where as a page describing transfer student admissions, could be very similar, but would contain the content words of differentiation “miami university, transfering students, transferring, transfer admission, transfer students”.