All we've got is the various scripture references - spirit = wind.
Doesn't tell me much.
Strongs
H7307 ruwach roo'-akh
from H7306;
wind; by resemblance breath, i.e. a sensible (or even violent) exhalation;
figuratively, life, anger, unsubstantiality; by extension, a region of the sky; by
resemblance spirit, but only of a rational being (including its expression and
functions):--air, anger, blast, breath, X cool, courage, mind, X quarter, X
side, spirit((-ual)), tempest, X vain, ((whirl-))wind(-y).