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: animal 
Words: dangle, fly, run, car, pounce
Example Output: car

Example Input: Category: widespread 
Words: regular, colonel, typical, ordinary, general
Example Output: colonel

Example Input: Category: geographical property 
Words: flat, smooth, horizontal, cabin, smooshed
Example Output:
cabin