Sweatshirt
Part of speech: noun
Definition: A loose shirt, usually made of a knit fleece, for athletic wear and now often used as casual apparel. A shirt worn against the skin, usually under other clothing, to absorb sweat.
Pullover
Part of speech: noun
Definition: A sweater that must be put on by pulling it over the head; a sweater without buttons or a zipper in frontAn exercise performed lying on the back in which the arms are extended behind the head and exertion lifts the weight above the head.