There are four types of teas, which are teas made from the leaves of the Camellia sinensis plant. Those teas are:
About 75% of the world drinks black tea on a regular basis. Herbal teas, such as peppermint, chamomile, and orange tea, are not made from the Camellia sinensis plant and are, therefore, not truely considered teas. Those "teas" are considered blends of various plants with different nutritional and chemical properties than true teas.