Steam is gaseous water. Hot air is just air (mostly nitrogen and oxygen and a mix of other things, usually including some water vapour) that is heated. Hot air will likely contain some steam.
air (oxygen) does not exist in space. that's why astronauts have suits with oxygen tanks.
It is something like the difference between ship, car and air-plane: they are hardly similar in any aspect.
. Unstable air, if lifted, will rise by itself without any forcing. Stable air, if lifted, will tend to sink back down.,
Whales do not hibernate- they would drown. They are mammals, and breathe air.
There is no difference between micrometres and microns
difference between bph and prostatomegaly
Yes, but it is only a slight difference.
A hot air balloon does not have any mean of steering and does not have permanent flotation. An airship has a permanent means of flotation (lighter than air gas bags) and a means of propulsion.
The threads are different on Nitrogen tanks. There are adapters to use a Co2 gauge on a nitrogen bottle .
Stroke volume and swept volume are same in any reciprocating engine/compressor.
Air Force One is the Air Traffic Control call sign for any aircraft carrying the president. Air Force Two can be an identical aircraft, carrying the Vice President.
RAF is the Royal Air Force. So the differences between the RAF and Royal Army (No such thing as the Royal Army it's the British Army) (or any army) would be same as the differences between any army and air force in general - different missions, different tasks, etc.