Rutabaga also is known as yellow turnip even though it's not really a turnip, just a close relative.
From the projects.washingtonpost.com
Swedes are an orange-fleshed, purple-and-yellow skinned, large kind of turnip.
From the guardian.co.uk
Add carrots, parsnips, Daikon radish, yellow beet, celery root and turnip and quickly saute a minute or two, keeping vegetables moving so they don't burn.