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

[DESCRIPTION]: The function f(x) seems to be selective for multiple concepts. 

1. Body Armor: The concept of "body armor" seems to have a strong association with a value close to 1 (0.9399). This suggests that the function may be selective for the concept of body armor.

2. Rifle: The concept of "rifle" also has a strong association with a value close to 1 (0.9982). This indicates that the function may be selective for the concept of a rifle.

3. Empire State Building, Female, Biology, Olympics, Touchdown, Tsunami, Big Ben, and Innocent: These words have relatively low values (between 0.0005 and 0.0078), suggesting a weak association with the concept(s) that the function is selective for. Based on these results, it is not clear what specific concept(s) these words are associated with.

It is important to note that this initial analysis is based on a limited set of test words, and further experimentation with a more diverse range of inputs would be valuable to fully understand the behavior of the function f(x).