Anthelmintics are medications used to treat infections caused by parasitic worms. There are several synonyms that can be used to refer to these drugs, including antiparasitics, vermifuges, and antihelminthics. Antiparasitics refer to drugs that are effective against parasitic infections in general, including protozoan and helminthic infections. Vermifuges specifically target intestinal worms such as roundworms, pinworms, and hookworms, causing them to be expelled from the body. Antihelminthics encompass both antiparasitics and vermifuges and are used to treat infections caused by all types of parasitic worms. Overall, these terms can be used interchangeably to describe medications that treat parasitic worm infections.