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: secretary duty 
Words: errands, fax, file, type, ram
ram

Category: boxing terminology 
Words: pack, level, deck, corner, jab
pack

Category: boxing terminology 
Words: knockout, corner, ring, deck, pack

pack