An aeroplane (being heavier than air) relies on movementto remain aloft: if it stops going forward* it will fall out of the sky. An airship (being lighter than air) does not.
While they are both classed as aircraft the aeroplane is an aerodyne and the airship is an aerostat.
* Note, when I say "going forward" this is relative to the surrounding air, not the ground. Many years ago when I was visiting RAF Lindholme I watched a glider hover and then fly backwards. This was possible because of very high winds (in fact the pilot landed shortly afterwards and flying was cancelled for the day due to the weather). It is airspeed that counts, not groundspeeed.
an Airship is an aircraft of the lighter-than-air type sustained in the air by gas an aeroplane in a mechanically propelled heavier-than-air flying machine
There are two common types of Airship:The ridged airship that the Zeppelin of the 1930s wasThe blimp.
The spelling.
there is no difference
See What are gliders on the airplane? answer.
There is noneAnswer'Aeroplane' is British English; 'airplane' is US English.
Automobile, airplane, airship...
Those terms are synonymous
One comes more toward the beginning of the sentence and the other is at the end of the sentence.
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.
propulsion is when air pushes an airplane
because a airplane is flown by wings and a space craft is flown by something else