Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Example Input: Category: direction 
Words: up, down, sliding, shameful, right
Example Output: shameful

Example Input: Category: physical activity 
Words: stoop, crouch, bow, duck, dog
Example Output: dog

Example Input: Category: date status 
Words: postponed, timely, early, current, jetstream
Example Output:
jetstream