The difference between abortion and miscarriage

1.abortion It means you take some medecine to remove your baby.

Nowadays, many young girls who probably are still students aborted their babies because of they didn't get married.

2.miscarriage It means because of some reasons ,then you can not give birth to a baby.

As far as I know, many elder females want to give birth to a baby, but they have miscarriages because of the ages probably.