Nausea is a symptom that is often described as an unpleasant feeling associated with flushing, tachycardia, and the urge to vomit. Vomiting is a physical phenomenon that involves contraction of the abdomen, chest wall muscles, and movement of the diaphragm followed by expulsion of the stomach contents.
American Cancer Society: Nausea
Cancer Care: Nausea and Vomiting from Chemotherapy
Oncolink: Nausea and Vomiting https://www.oncolink.org/support/side-effects/nausea-vomiting