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: emotional display 
Words: fawn, antling, lust, suppressed, love

SOLUTION: antling

PROBLEM: Category: personal characteristic 
Words: ethical, tropical, unflappalbe, cool, optimist

SOLUTION: tropical

PROBLEM: Category: corporate 
Words: united, inflexible, firm, ceo, common

SOLUTION:
inflexible