The function seems to be selective for words that are associated with celestial bodies or natural elements. It assigns a higher value (closer to 1) to words like "moon" and "water" that are commonly associated with celestial bodies and natural elements. On the other hand, words like "apple", "car", and "happiness" that are not strongly associated with celestial bodies or natural elements are assigned lower values (closer to 0). The function might be capturing the concept of natural or celestial-related entities.