Cloves are the rich, brown, dried, unopened flower buds of Syzygium aromaticum, an evergreen tree in the myrtle family. The name comes from the French "clou" meaning nail. Cloves come from Madagascar, Indonesia and Sri Lanka. Cloves are used in spice cookies and cakes.
Cinnamon is the dried bark of various laurel trees in the cinnamomun family. One of the more common trees from which Cinnamon is derived is the cassia. Ground cinnamon is perhaps the most common baking spice. Cinnamon sticks are made from long pieces of bark that are rolled, pressed, and dried.
Cardamom sometimes cardamon or cardamum, is a spice made from the seeds of several plants in the genera Elettaria and Amomum in the family Zingiberaceae. Both genera are native to the Indian Subcontinent (known as Elaichi in Hindi/Urdu speaking India/Pakistan), Bhutan, Indonesia and Nepal.