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.

Q: Category: secretary duty 
Words: folder, support, order office supplies, correspondence, file

A: folder
****
Q: Category: ocean 
Words: up to the moment, tide, current, jetstream, brine

A: up to the moment
****
Q: Category: emotional status 
Words: amp, fret, emotional supports, frustrated, emotional upsets

A:
amp
****