Capitalism

The Industries or factories are owned by individual people. The government does not own industries. Because of this people gets free hand they got job they want with specialization and ability to work.

There is competition between industries which result in good quality of product as they have to attract consumers. all benefits goes to customers. 

All profits earn by selling product directly goes to Owner of industry and employees get salary. In this type of System Who have money to invest can earn more wealth Labour class peoples can not be Owner of company until they invest capital. Working in company can not make them owner. Because of this Rich gets richer and poor gets poorer.

This system is democratic in nature state does not direct companies to apply policy according to government.

Everyone earn his wealth by working for himself, Individual have right to start business resources for business are provided or invest by owner himself. Adam smith wrote a book on capitalisms called wealth of the nation

In capitalism their is chance to create a monopoly in certain sector for example if someone have computer making company and they only make efficient  computer and buy or make deals with other competitor Computer making companies to acquire market. Then they can sale computer with price they want.as their is no competition and have best product to use. this system also exploit consumers.

Communism

Communism based on concept of equality. Every man can do their work according to their Ability without any specialization in work. Pay and quantity of work is equal, Owner of the national wealth are people, Society not government or individual people. but actual communisms on ground which is adopted in Russia and china is govern by state. 

There is no competition among people so Quality of product and output may not good, in this profits should be share with working class but in actual it did not happen.

owner of companies is state and provide all investment and resources, labours are not free to select what will do or what kind of job they will do it is state that decide which job is suitable for workers.

Leninism is communism adopted by Soviet union under revolution headed by Vladimir Lenin. And Maoism is communism adopted by China under Revolution headed by Mao Zedong. These both types of communism have state government and have single party rule called totalitarian government.