Generally speaking, the word "tea" refers to a hot beverage that is prepared by infusing or brewing / boiling / decocting the dried leaves of the Camellia sinensis plant. Like "coffee," the word tea can be used to order a single cup of tea in a cafe or restaurant.
There are two types of teas, black and green, which are essentially the same plant, Camellia sinensis. The difference is that black tea leaves are fermented; green are not. .So, one can safely conclude that Tea, especially Green Tea offers great health advantages in long term over Coffee.