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: window material 
Words: panel, translucent fabric, spatula, metal, glass
spatula

Category: baby animals 
Words: lust, kitten, deer, bambi, fawn
lust

Category: aesthetic characteristic 
Words: level, high quality, attractive, fine, ticket

ticket