The Incas were a powerful civilization that ruled over much of South America from the 13th to the 16th centuries. The word "Incas" is derived from the Quechua language, which was the official language of the Inca Empire. However, there are many other synonyms that can be used to describe this ancient civilization, such as the "Children of the Sun," "Inca people," "Inca Empire," or simply "Inca" for short. These terms all refer to the same group of people who were known for their advanced agricultural techniques, impressive architectural feats, and their unique culture and traditions. Regardless of which term is used, the Incas remain a fascinating and important part of history.