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: shady activities 
Words: falsehood, banned, heavy, unlicensed, fudge
heavy

Category: animal 
Words: trap, dog, fish, tiger, horse
trap

Category: shady activities 
Words: fudge, fix, lie, loosen, molasses

molasses