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.

[EX Q]: Category: store status 
Words: beside, finished for the day, running., close, gated
[EX A]: beside

[EX Q]: Category: emotional status 
Words: kind, down, sad, backward, emotionalities
[EX A]: backward

[EX Q]: Category: type of rigidity 
Words: tough, taut, rough, amalgamated, firm
[EX A]:
amalgamated