What are statutory law and administrative law?

"Statutory law is written law enacted by legislatures at all levels, from city and state governments to the federal government. Examples of statutory law are the federal and state constitutions, bills passed by Congress, and ordinances, which are laws enacted by local governments. Statutory law is the chief source of new laws in the United States. Among the business activities governed by statutory law are securities regulation, incorporation, sales, bankruptcy, and antitrust. Related to statutory law is administrative law, or the rules, regulations, and orders passed by boards, commissions, and agencies of federal, state, and local governments. The scope and influence of administrative law have expanded as the number of these government bodies has grown. Federal agencies issue more rulings and settle more disputes than all the courts and legislatures combined. Some federal agencies that issue rules are the Civil Aeronautics Board, the Internal Revenue Service, the Securities and Exchange Commission, the Federal Trade Commission, and the National Labor Relations Board."