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.

Example Input: Category: animal 
Words: fly, dangle, bee, jump, flap
Example Output: flap

Example Input: Category: accomodation 
Words: even, townhome, level, flat, paved
Example Output: level

Example Input: Category: bird 
Words: crane, swallow, hummingbird, davit, hoist
Example Output:
davit