Some Terminology

Places

Kingdom of Fiore: A large, penninsula country inhabitted by 17 million people. Fiore means "flower" in Italian. Governed by the Magic Council.
Magnolia: Coastal town of Fiore. Its only guild is Fairy Tail.
Tower of Paradise: Structure that dark mages attempted to construct in order to revive Zeref. It has since been destroyed.
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Objects/Other

Jewel: The monetary currency in Fiore.
Gold/Zodiac Keys: Extremely rare keys (only twelve in the world) which open the gate of the "Ecliptic Zodiac."
Silver Keys: Most commonly used keys of Steller Spirit Mages. There are many silver keys that open many different gates to various spirits.
Lacrima: Italian for "Tear." Magic Orb substance found throughout the world. There are several different types:
(X) . Magically Charged: A mage can charge their magic into the lacrima to suit their uses.
(X) . Communications Lacrima Crystal: Lacrima used like a crystal ball to communicate with others.
(X) . Dragon Lacrima: A rare and extremely expensive lacrima that gives individuals artificial Dragon Slayer powers.