The term "the Old World" typically refers to the continents of Europe, Asia, and Africa, which are the regions that have been known and populated for thousands of years. However, there are several other synonyms that can be used to describe these regions. One of the most common synonyms is "Eurasia", which refers to the combined landmass of Europe and Asia. Another alternative is "Afro-Eurasia", which includes the continents of Africa, Europe, and Asia as a single landmass. Other synonyms include "the Ancient World", "the Eastern Hemisphere", and "the World East of Rome". These synonyms are often used interchangeably to refer to the regions that constitute the Old World.