TASK DEFINITION: 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.
PROBLEM: Category: date status 
Words: early, current, tide, up to the moment, do tests

SOLUTION: tide

PROBLEM: Category: social gathering 
Words: club, bar, dance hall, discothek, roll

SOLUTION: roll

PROBLEM: Category: type of rigidity 
Words: tough, taut, leverage, unbending, firm

SOLUTION:
leverage