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: physical property 
Words: bulky, skinny, carbs, absorption, fat
Example Output: carbs

Example Input: Category: corporate 
Words: corporation, firm, alignment, taut, leverage
Example Output: taut

Example Input: Category: aesthetic characteristic 
Words: equitable, fair, light, texture, level
Example Output:
equitable