Trousers, slacks, or pants are an item of clothing worn from the waist to anywhere between the knees and the ankles, covering both legs separately. In the United Kingdom, the word pants generally means underwear and not trousers.

Shorts are a garment worn over the pelvic area, circling the waist and splitting to cover the upper part of the legs, sometimes extending down to the knees but not covering the entire length of the leg.