Based on the experiments conducted, here is a description of the function implemented by f(x):

[DESCRIPTION]: The function seems to be selective for concepts related to rocks and minerals. Words like "rocks" and "minerals" receive high scores close to 1, indicating a strong association with these concepts. On the other hand, abstract words like "classical" and "outgoing" receive low scores close to 0, suggesting little to no association with these concepts. The function also seems to have some association with the concept of the ocean, as evidenced by the moderate scores for words like "ocean" and "blue". Additionally, the function shows a weak association with the concept of light, given the low score for the word "light". However, words like "diving", "France", and "rhyme" do not appear to have a significant association with any particular concept, as indicated by their relatively low scores.