(i) Sericulture: The rearing of silkworms to obtain silk economically is called sericulture.
(ii) Scouring: The sheared skin with hair is thoroughly washed in tanks to remove grease, dust, and dirt. This is called scouring.
(iii) Rearing: It means taking care of herds of animals which includes feeding, grazing, breeding, etc. for economical purposes like meat and other useful products.