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: construction 
Words: hoist, tackle, digger, excavator, crane
tackle

Category: police punishment 
Words: comfortable, money, fine, prison, jail time
comfortable

Category: physical activity 
Words: plunge, winter, climb, fall, stoop

winter