Types of aircraft ?

Lighter than air aircraft : They use buoyoncy to float in air like ship floating on water . In which gasbags or canopies , filled with low density gas such as helium , hydrogen , hot air . In which the lift produce is called as aerostatic lift  because it works on differance in density in atmosphere to  inside gasbags or canopies . examples are airship , balloon and kites . 

Heavier than air  aircraft : They use wings to support in air by creating pressure differance on wings . they work on bernaulli's principle as well as on newton's third law of motion . They may be fixed wing or rotary wing aircraft . In which lift produce is called as aerodynamic lift because it not works on buoyoncy of air . the examples are glider , aeroplane , helicopter sailplane etc .