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: elements 
Words: fire, earth, water, blaze, recruit

SOLUTION: recruit

PROBLEM: Category: weather 
Words: honorable, fair, stormy, sunny, endure

SOLUTION: honorable

PROBLEM: Category: animal 
Words: fish, dive, ant, flutter, fly

SOLUTION:
flutter