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

Category: secretary duty 
Words: organize, support, text, sort mail, file
text

Category: ocean 
Words: current, flow, belated, water, course

belated