Viscera
Part of speech: noun
Definition: Collectively, the internal organs of the body, especially those contained within the abdominal and thoracic cavities, such as the liver, heart, or stomach. The intestines.
Innards
Part of speech: noun
Definition: Entrail; gut; intestine.The internal organs of a human or animal; especially viscera, intestines.The inner workings of something; the insides or guts.