Birth control pill and Mifepristone

Birth control pill noun - A contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception.

Mifepristone and birth control pill are semantically related. in oral contraceptive pill topic. In some cases you can use "Mifepristone" instead a noun phrase "Birth control pill".

Mifepristone noun - An abortion-inducing drug (trade name RU_486) developed in France; when taken during the first five weeks of pregnancy it blocks the action of progesterone so that the uterus sloughs off the embryo.

Birth control pill and mifepristone are semantically related. Sometimes you can replace phrase "Birth control pill" with "Mifepristone", this terms are similar.