Brassica ( ) is a genus of plants in the mustard family (Brassicaceae). The members of the genus are informally known as cruciferous vegetables, cabbages, or mustard plants. Crops from this genus are sometimes called "cole crops"derived from the Latin "caulis", denoting the stem or stalk of a plant.

Based on that paragraph can we conclude that this sentence is true?
Brassica are also considered mustard plants by some.
Yes