"Federal" is a word in LAW AND LEGAL, ENGLISH

In constitutional law. A

Consisting or pertaining to such a government; as, the
Federal Constitution; a Federal officer.

Friendly or devoted to such a government; as, the Federal
party. see Federalist.

Composed of states or districts which retain only a
subordinate and limited sovereignty, as the Union of the United States,
or the Sonderbund of Switzerland.

Pertaining to a league or treaty; derived from an
agreement or covenant between parties, especially between nations;
constituted by a compact between parties, usually governments or their
representatives.

See Federalist.