Executive Order: An executive order is a directive issued by the President of the United States that manages operations of the federal government. It does not require approval from Congress.
Statute: A statute is another term for legislation or a written law passed by a legislative body. Statutes are typically more permanent than other forms of legislation.
Bill: A bill is a proposed piece of legislation that has not yet become law. It must go through various stages in Congress before it can be enacted into law.