How do you express the meaning of words like race, breed, cultivars or variety?
Race: A race is kept below the species and is an informal taxon. Members from different races of the same species can interbreed.
Breed: A breed is a specific group of domestic animals which are homogenous in appearance, which has been achieved through selective breeding.
Cultivar: A cultivar is a selected group of plants which can be raised through vegetative propagation.
Variety: Variety is similar to a race but used for the plants.