Subject: Are Steam and Water Vapor the same thing?

I read on one web site that steam is water in a gas phase while water vapor was 
steam combined with air. Both steam and water vapor are invisible, and that the 
stuff you see over a boiling kettle is a mixed cloud is this correct? If it is 
what is the molecular process that turns steam into water vapor? Some kind of 
bonding I assume. If water vapor is a combination of steam and molecules within 
the air (nitrogin, oxygen, carbon dioxide, etc.) what happens to these elements 
when the water vapor condenses? If they are incorporated into the liquid phase 
are they in any significant amounts? If steam and water vapor are the exact 
same thing what does happen when water-gas molecules collide with molecules in 
the air?

Re: Are Steam and Water Vapor the same thing?