Tops are an item of apparel that refers to all garments that are worn to cover the torso. Tops may, or may not include sleeves to cover the arms.
About Windbreakers:
Windbreakers are lightweight jackets designed to block wind chill and resist light rain in milder weather conditions.
Windbreakers are usually made of synthetic, lightweight materials and often feature elastic or fitted cuffs and waistband with stand-up collar and hood.