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: frank, concise, bun, matter of fact, fortitude
Example Output: bun

Example Input: Category: date status 
Words: belated, blue, early, detestings, current
Example Output: blue

Example Input: Category: kitchenware 
Words: fork, lead, glass, bowl, plate
Example Output:
lead