Pants are apparel bottoms that have material which covers the entire leg, down to the ankle.
About Shorts:
Shorts are apparel bottoms that have material cut short above the knee or slightly below the knee.
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.