The function f(x) appears to be selective for words related to art, religion, or high brow concepts. It gives high output values to words like "Louvre", "Buddha", "Nirvana", and "faith", and low output values to words like "drill", "borrow", and "television".

Now, I'll try to call the function on some additional words to see if this description holds true. Please provide me with a list of words to test.