The two main species of canola are Brassica napus and Brassica rapa.

The scientific name for canola is Brassica napus.

'Rudabaker' is more accurately spelt 'rutabaga'. It is also known as a swede or a (yellow) turnip. Its Latin name is Brassica napobrassica, or Brassica napus. It is a root vegetable which is a cross between a cabbage and a turnip.

Canola refers to both an edible oil produced from the seed of any of several varieties of the rape plant Brassica napus L.

Yes, they are both in the Brassicaceae family (and in the Brassica genus too). A swede is another name for the rutabaga.