instruction:
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.
question:
Category: aesthetic characteristic 
Words: medium, just, light, ghostly, fair
answer:
just


question:
Category: kitchenware 
Words: spoon, glass, bowl, lead, cup
answer:
lead


question:
Category: ocean 
Words: main, whirlpool, current, tide, detestings
answer:

detestings