wind: naturally moving air, from a light breeze to a driving gale
This is the ordinary Greek word for the wind you feel and see moving through the world: the air in motion. It covers the whole range, from the light breeze that stirs a reed by the water to the fierce gale that swamps a fishing boat. In the New Testament the violent end of that range dominates, because so many scenes take place on the Sea of Galilee, where sudden storms trap boats and where Jesus stills the wind and the waves with a word.
From that plain physical sense the word reaches into two familiar figures of speech. Because winds blow in from every quarter, the Bible speaks of "the four winds" as a way of naming all directions at once, so that gathering people from the four winds means gathering them from every corner of the earth. And because wind pushes whatever is loose wherever it will, the word can picture a person with no anchor being shoved back and forth by shifting ideas.
All of this is one word with one core: air on the move. Whether it names a storm, a compass point, or a current of teaching, it always pictures the same thing, moving air, and lets the setting decide the shade of meaning.