Placentas are the organ that provides oxygen and nutrients to the developing fetus in mammals. Synonyms for the word placenta include afterbirth, fetal membrane, and embryonic sac. Other terms commonly used to describe the placenta are chorion, umbilical cord, amniotic fluid, and amniotic sac. These terms are often used interchangeably and refer to different components of the organ that supports fetal development. The placenta plays a vital role during pregnancy, and its health is essential for the well-being of the developing fetus. Therefore, understanding the various terminologies associated with the placenta is crucial for healthcare workers and expecting mothers.