It is also known as Macha tea and is obtained by the same plant Camellia Sinensis. The main difference between matcha tea and green tea is that matcha tea is the powdered form of green tea. In this green tea leaves are grounded into a fine powder, which results into a concentrated version of green tea. In a way you are consuming the whole leaf and it tastes different as well. Plus instead of steeping the leaves you only have to put powder in your cup and the best part is you can add it to any drink milk, juice, smoothie or whatever you like.
When it comes to health benefits, both of these shares the same but matcha has greater nutritional and antioxidant values. You would have to drink 3 cups of green tea to match one cup of matcha tea. It has 68mg of caffeine while green tea has only 32mg. It mainly increases metabolism and the physical endurance of the body.