Turnip can refer to three vegetables, which are described under the articles Turnip, Rutabaga, and Jicama. The confusion results from the following regional differences of usage.
Scientific term Brassica rapa rapa Brassica napus or B. napobrassica Pachyrhizus
Southern England, most Commonwealth countries turnip swede (from "swedish turnip") yam
Scotland, Ireland, the Isle of Man, swede or white turnip turnip, yellow turnip or "neep" yam
Cornwall white turnip turnip
United States, South Yorkshire turnip rutabaga or yellow turnip jicama
Malaysia, Singapore, and Philippines turnip
also called white turnip or summer turnip yellow turnip or winter turnip sweet turnip