Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Q: fret, nervous, board, fingerpick, jack

A: nervous
****
Q: lollygag, cake, misuse, goodbye, fritter

A: cake
****
Q: correspondence, schedule, document, errands, file

A:
document
****