Genus Ascaris is a parasitic roundworm that is commonly found in the intestines of pigs, horses, and other mammals. This worm is notorious for causing ascariasis, a type of disease that affects millions of people and animals worldwide. To refer to this group of worms, there are several synonyms that can be used. For instance, some people may refer to them simply as Ascarids or Ascarid worms. Alternatively, some individuals may use the term large intestinal roundworms or nematodes to describe these parasitic worms. Other synonyms that are commonly used to refer to the genus Ascaris include the common roundworm, giant roundworm, and the common intestinal worm.