Contraception is a device or medication that is used to prevent unplanned pregnancies. Unprotected sexual intercourse can result in unwanted pregnancy and may lead to abortion. Thus, contraception or birth control methods are used to avoid pregnancy which may end up in abortion.
There are many different methods of birth control and each one is different in its mode of action and efficacy. Each one has its advantages and disadvantages, hence women can choose the best method based on their unique needs and requirements.