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: bird
Words: winch, swift, crane, hoist, ostrich
winch

Category: secretary duty
Words: support, type, file, software, answer
software

Category: location (proximity)
Words: finished for the day, adjacent, close, on top of, nearer
finished for the day