The combine harvester, also known as the combine, is a farming machinery used for reaping, threshing, and winnowing grains. However, different regions refer to this highly efficient machine in various ways. In the United States, it is colloquially called combine, while the Brits refer to it as a harvester. The phrase combine harvester has several synonyms, including combine, reaper, and harvester. Other terms synonymous with the combine harvester include the reaping machine, thresher, and header. Some countries also call it a havester-thresher or simply a combine harvester-thresher. In general, despite the name or term used, the combine harvester remains an essential tool in modern-day agriculture.