Based on multiple tests run with diverse words, it appears that the function f(x) often returns higher values for words related to natural elements or concepts (e.g., sun, moon, peace) while returning lower values for words related to everyday objects or human-made items (e.g., chair, television, book).

[DESCRIPTION]: The function f(x) implemented in the ./temp1/function.py script primarily appears to be selective for words associated with natural elements or concepts as it often returns higher values for these words compared to common everyday objects or human-made items.