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

Category: widespread 
Words: average, typical, common, general, admiral
admiral

Category: secretary duty 
Words: prepare, file, folder, make coffee, reception

folder

