Contraception refers to methods or devices used to prevent pregnancy during sexual intercourse. It allows individuals and couples to control if and when they want to conceive a child. Common forms of contraception include birth control pills, condoms, intrauterine devices (IUDs), and implants. These methods work in various ways, such as blocking sperm from reaching an egg, preventing ovulation, or altering the uterine lining. Contraception can also help in managing health conditions and is an important aspect of reproductive health for many people.