Reusing means using something again, either for the same purpose or for a different purpose, rather than discarding it. It's a waste management practice that helps conserve resources and reduce waste. Examples include refilling water bottles, using reusable shopping bags, and repurposing old clothing. 

Elaboration: 

Definition:

Reusing is the act of using an item more than once, extending its useful life and minimizing the need for new products. 

Contrast with Recycling:

While both are beneficial for the environment, reusing differs from recycling in that it doesn't involve breaking down the item into raw materials. Reusing keeps the original item intact and ready for further use. 

Benefits of Reusing: 

Resource Conservation: Reusing reduces the need to extract, process, and manufacture new materials, thus conserving natural resources.