An abortion is when they pull the baby out and can be done at anytime and a dnc is when they just bust the little surrounding that the embryo is in and can only be done with in 5 to 9 weeks
An abortion is a womb scraping and a DNC is where they insert a balloon like instrument and inflate in inside you. This loosens the blood lining (kind of brings on a heavy flow) and is less intrusive.
I never had an abortion nor do I know anyone who has,but a DNC is a scraping of the womb, the womb is stretched and scraped,sometime this is needed and will help women that have some type of female problems,some cases a woman can have a DNC and it will help relieve the problem that a woman may have thought could only be helped if she has a historectomy .