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: moral characteristic 
Words: loyal, alright, fair, unprejudiced, 70
Example Output: 70

Example Input: Category: accomodation 
Words: apartment, cabin, squashed, smooth, flat
Example Output: smooth

Example Input: Category: widespread 
Words: normal, standard, commander, common, general
Example Output:
commander