Difference between Allegiance and Alliance

What is the difference between Allegiance and Alliance?

Allegiance as a noun is loyalty to some cause, nation or ruler. while Alliance as a noun is 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.

We hope you now know whether to use Allegiance or Alliance in your sentence.