Crazy Horse replied: "A Pullover doesn't have buttons and can be worn with a collared shirt underneath.
A Sweater is usually worn alone and is also a pullover (no buttons)
A Jacket is something you wear over your clothes to keep you warm.
A sweatshirt is a printed version of a sweater, only cheap.
A Coat you wear when it's cold and over your clothes-heavier than the jacket (Jacket-fall, Coat-winter)
A jumper is many different things. Mainly a one piece that men wear to work on cars in the cold (full legs and arms and body)
A Jersey can either be a cardigan with a "college name" or a jacket with the same.
A Cardigan is a V neck sweater with buttons that you wear with a nice shirt matching underneath.
A Hoodie is a sweatshirt that is also a pullover with a hood attached. (forgot that.)
Seems that the older versions of this clothes group have changed since I was in school."