ALLIANCE n.
The state of being allied; the act of allying or uniting; a union or connection of interests between families, states, parties, etc., especially between families by marriage and states by compact, treaty, or league; as, matrimonial alliances; an alliance between church and state; an alliance between France and England.…
ALLY v.
To unite, or form a connection between, as between families by marriage, or between princes and states by treaty, league, or confederacy; -- often followed by to or with. O chief! in blood, and now in arms allied. Pope.