Based on the output values of the function for the given inputs, it seems like the function is assigning a low value (close to 0) to most of the words. However, the word "elephant" receives a higher value compared to the other words. 

One possible interpretation of this behavior is that the function is selective for words associated with animals. The fact that "elephant" receives a higher value suggests that the function might have a preference for larger or more notable animals. 

So, based on these initial results, a preliminary description of the function could be: 
[DESCRIPTION]: The function f(x) seems to be selective for words associated with animals, with a preference for larger or more notable animals.