The morning after pill is NOT abortion, and that is medical fact. If a woman has unpreotected sex, or is raped, or the condom breaks, whatever - if she takes the morning after pill within 72 hours, it will either prevent fertilization, or prevent the fertilized egg from implanting on the uterine wall. Medically speaking, it is not a pregnancy until this implantation has happened. An abortion terminates a pregnancy, so these are two very different things.
Many people confuse the morning after pill, which is really a high dose of hormones, with RU 486, which is a non-surgical abortion. RU 486 is the pill that women take to actually terminate a pregnancy.