The term pregnancy category is commonly used to describe the safety of medicines during pregnancy. However, there are other synonymous words that can be used interchangeably. A few examples include fetal risk category, pregnancy risk category, reproductive risk potential, and teratogenicity rating. These terms all relate to the potential harmful effects of medication on a developing fetus. The categorization system helps healthcare providers make informed decisions on prescribing medications for pregnant women while minimizing any potential risks. It's important to note that the categorization of a medication may change based on new evidence and research introduced over time, emphasizing the need to continually monitor and reevaluate the safety of medication use during pregnancy.