Rapeseed also known as rape, or oilseed rape, colza, plant of the mustard family  grown for its seeds, which yield canola, or rapeseed, oil. Canola oil is variously used in cooking, as an ingredient in soap and margarine, and as a lamp fuel. 

There can be confusion between what is rapeseed and what is canola, since canola is the same species as rapeseed. Rapeseed is the traditional name for the group of oilseed crops in the Brassicaceae family but that group is now divided into two — industrial rapeseed and canola.