In real life air is gaseous substance that have no physical form and is mainly made of oxygen and nitrogen ,wind is basically the movement of the air ,it cab be used for many different things such as creating energy
Wind Release is the element that allows us to create and manipulate wind .Wind is also one of the 5 basic elements in narutoverse ,The user of wind performs it by making the chakra sharp and thin,wind is mostly used offensively but it could also be used in defense ,characters like danzo,darui and baki are able to use wind.Wind can also be
channeled into blades,kunais and shuriken etc ...making the weapons more destructive
Wind is strong against lighting since it disturbs the electrical connections in the element ,wind is weak against fire since it works as a fuel to it,causing the fire to become bigger .
However wind can be used with fire to preform more destructive attacks ,it also works well with water since it makes it more sharper and faster.
KGs that Fuuton is a part of are:ice release, Scorch Release and Magnet Release.
hope that's enough Lol