What are the similarities between turnips and cabbage?

Turnip and cabbage. At first glance, plants are not related to each other in any way. But, always, there is a “but”.
Similar features.
Turnip and cabbage belong to the species of the genus “cabbage”, the family “cabbage”. Life expectancy is 1 to 2 years. Plants that are used for food, both raw and cooked, are used for conservation.
Differences.
Homeland: turnip – the Mediterranean coast, cabbage – Asia.
Appearance. The fruit of a cabbage is a head of cabbage, which consists of leaves tightly adjacent to each other. Turnip fruit – is underground, juicy and hard. Similar in texture to a large white (yellow) radish.
Both plants are very nutritious and contain a lot of vitamins.