Child rearing is just another term for raising children, bringing up children. I would like to add that it is not just the basic food, shelter, clothing triad that keeps children alive, but also the active moulding of character, personality, talents, and emotional and physical well-being of the child.
North American Industry Classification System. The North American Industry Classification System or NAICS (pronounced nakes) is used by business and government to classify business establishments according to type of economic activity (process of production) in Canada, Mexico, and the United States of America.
1 Standard Industrial Classification Codes (SIC Codes) identify the primary line of business of a company. It is the most widely used system by US government, public, and private organizations.  North American Industry Classification System (NAICS Codes) is the alternative code structure, updated every 5 years.