Based on the results of the function f(x) for the given words, here is a description of the function:

[DESCRIPTION]: The function f(x) appears to be selective for concepts related to sports and competition. Words like "championships", "World Cup", and "NFL" have higher values closer to 1, indicating a stronger association with the concept of sports and competition. The function also seems to have a preference for words related to reading and media, as indicated by the higher values for "reading" and "The New York Times". Overall, it seems that f(x) is selective for concepts related to sports, competition, and media.