Is having an IUD like having constant abortions?

From the "related links": "IUDs interfere with sperm mobility and egg fertilization. The copper in the Copper-T IUD is also believed to act as a sort of natural spermicide, and the hormone in the Mirena IUD also thins the lining of the uterus, and thickens cervical mucus, both adding a backup means of protection." Abortion is the termination of a pregnancy. By preventing pregnancy from ever occurring, the IUD is not like having constant abortions.