Fire transforms food into energy. It creates the impulses of nervous reactions, our feelings, and even our thought processes. Fire is considered a form without substance. Air is the gaseous form of matter which is mobile and dynamic. It is a key element required for fire to burn.
Air is existence without form.
Ether is the space in which everything happens. It is the field that is simultaneously the source of all matter and the space in which it exists. Ether is only the distances which separate matter. The chief characteristic of ether is sound. Here sound represents the entire spectrum of vibration.