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.

Category: emotional display 
Words: follow, doe, suppressed, culture, fawn
doe

Category: body part 
Words: heel, shin, pound, finger, foot
pound

Category: social gathering 
Words: club, bar, dance hall, discothek, roll

roll