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: bird 
Words: dump truck, tackle, crane, hoist, davit
Example Output: dump truck

Example Input: Category: emotional display 
Words: pester, fawn, suppressed, follow, woods
Example Output: woods

Example Input: Category: guitar part 
Words: truss rod, pick, chord, worried, fret
Example Output:
worried