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.
--------
Question: Category: poker 
Words: call, sail, deck, board, queen

Answer: sail


Question: Category: emotional status 
Words: truss rod, emotional supports, emotional upsets, emotionalities, fret

Answer: truss rod


Question: Category: physical activity 
Words: jog, duck, fall, squat, cow

Answer:
cow