Bottoms are an apparel term used to describe the layers of clothing worn on the bottom half of the body. Bottoms may be in reference to undergarments or outerwear.
About Denim:
Denim is a rugged and durable twillfabric that features a distinctive indigo blue color with a diagonal pattern. Denim rules the casualapparel world where it is most commonly used for making jeans and shirts, but it has also become popular in the manufacturing of bags, hats and many other products.
About Pants:
Pants are apparelbottoms that have material which covers the entire leg, down to the ankle.
About Shorts:
Shorts are apparelbottoms that have material cut short above the knee or slightly below the knee.