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.

Category: emotional status 
Words: sad, remorseful, down, ashamed, sliding
sliding

Category: kitchenware 
Words: glass, colander, dish, plate, panel
panel

Category: weather 
Words: 70, tangle, fair, mild, medium

medium