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: elements 
Words: ice, fire, burn, let go, combustion
[A]: let go


[Q]: Category: type of sandwich 
Words: french toast, community, club, burger, dagwood
[A]: community


[Q]: Category: emotional status 
Words: emotional supports, board, bored, emotional state, fret
[A]:
board