Where there is a strong wind it means the air is moving quickly. Strong winds are mostly called gales or cyclones and can bring rain, hail and snow.
We get wind so we can breathe. Some places are warmer than others. The warm air heats up becomes light and rises and the cool air moves to replace it. Winds are named after the direction they come from - northerly southerly etc.
As well as cooling us down. Wind is used to produce energy using things like windmills and wind turbines. What would you use air for?