CVT has unlimited gears... u wud never feel a gear shift . the rpm will rise or fall constantly.inside the cvt gearbox, theres a cone sort of thing and the pulley goes up and down on it adjusting the speed according to the rpm.
automatic is just when the car shifts gears on its own.
prosmatec(progressive shift management technology) is a better type of automatic gear with smoother gear shifts
steermatic was a variant of honda city which had a 1.5l vtec engine with cvt gearbox AND tiptronic gears... matlab if u put the gear in the "7 speed mode", u can change the gears like manual transmission through buttons on the steering wheels