Communism and Leninism are said to be very similar to each other. If in case you do not understand what communism is, this is meant to get rid of all of the private companies and all of the other private things that people own. The main goal of communism is to make sure that all of society will be classless and everyone will have the same class. Leninism is considered to be something that is similar to communism.
This is one of the theories that have been created by Vladimir Ilyich Lenin. It was only in the year 1922 when Leninism started to gain some popularity with different people. Another difference is that communism would like to make sure that there would be a revolution so that capitalism can be removed.