Communism – ideology whose goal is the a socioeconomic order centered around common ownership of the means of production, distribution, and exchange that allocates products to everyone in the society, also involves the absence of private property, social classes, money, and the state
Maoism – is a variety of Marxism–Leninism that Mao Zedong developed to realise a socialist revolution in the agricultural, pre-industrial society of the Republic of China and later the People's Republic of China[2]
Stalinism – was the theory and practice of communism practiced by Joseph Stalin, leader of the Soviet Union from 1928 to 1953. Officially it adhered to Marxism–Leninism, but whether Stalin's practices actually followed the principles of Marx and Lenin is a subject of debate and criticism.[3]
Trotskyism – is the theory of Marxism as advocated by Leon Trotsky on the basis of permanent revolution. Trotsky considered himself a Bolshevik–Leninist, arguing for the establishment of a vanguard party. He considered himself an advocate of orthodox Marxism.[4]