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: aesthetic characteristic 
Words: prison, fine, there, handsome, high quality
prison

Category: police punishment 
Words: ticket, comfortable, prime, custody, fine
comfortable

Category: secretary duty 
Words: firewall, file, reception, errands, prepare

firewall