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

Example Input: Category: body part 
Words: heel, shin, pound, finger, foot
Example Output: pound

Example Input: Category: guitar part 
Words: emotional, jack, fret, chord, inlays
Example Output:
emotional