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: baby animals 
Words: follow, colt, fawn, cub, calf
follow

Category: widespread 
Words: average, typical, common, general, admiral
admiral

Category: mode of transportation 
Words: cockroach, fly, train, car, glide

cockroach