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: activity 
Words: blow, waste away, sweet roll, whittle, fritter
sweet roll

Category: police punishment 
Words: probation, jail, arrest, fine, beautiful
beautiful

Category: animal 
Words: fly, eagle, bus, fish, run

bus