Turnip plant and White turnip

Turnip plant noun - Any of several widely cultivated plants having edible roots.

White turnip and turnip plant are semantically related. In some cases you can replace phrase "White turnip" with "Turnip plant", this phrases are similar.

White turnip noun - Widely cultivated plant having a large fleshy edible white or yellow root.

Turnip plant and white turnip are semantically related. You can use "Turnip plant" instead a noun phrase "White turnip".