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: moral characteristic 
Words: unprejudiced, texture, fair, impartial, well
texture

Category: physical property 
Words: fat, area, ugly, capacitance, calcium
calcium

Category: physical activity 
Words: drop, fall, trip, hiems, plunge

hiems