They are both called vertical-axis turbines. Once a wind device is installed, the only cost is the cost of maintaining the equipment. The energy to run it is free. Wind is continually renewed. It does not get used up and will always be available.
Wind is available everywhere.
Wind energy can be used around the world and far from electrical power lines. Using wind energy causes no polluting waste products. Once a windmill or turbine is built, it continues to work without damage to the environment. Wind machines are quite simple to set up and use. Small windmills or turbine can be used on farms or homes.