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: direction 
Words: south, loveful, down, left, falling

SOLUTION: loveful

PROBLEM: Category: ocean 
Words: signal, timely, brine, flow, current

SOLUTION: timely

PROBLEM: Category: accomodation 
Words: flat, duplex, condominium, horizontal, cabin

SOLUTION:
horizontal