Capitalism Is A Government Of Markets. There Is No Intervention Of Governmetn. On The Other Hand, Hte Communism Is A Government Of People. So There Is Nothing One Can Do Privately.
The Socialism, Is A Mixed Syste. It Not Only Has The Advantages Of Capitalism, But Also Tries To Avoid The Disadvantages Of Capitalism.

Followin Differences May Be Noted

1 The Govt. Intervenes Only To Safeguard, The Interests Of
Common People.
2 The Market Forces Are Allowed To Work, But Are Constrained In
Limits, So That The System Does Not Exploit 'have Nots'.
3 Almost All The Economies, To Some Extent Have Implemented It.
Even Us, When Implements Environmental Laws, Its A Move
Towards Socialism...in The Broad Sense.
4 It May Be In Not A Fashionable Good Taste To Talk About
'socialism' Now A Days, But The System Is A Good One. Better
For The Poor.
5 Ensures Equitable Distribution Of Wealth
6 Govt. Takes The Responsibilities Of Basic Needs- Food, Clothing
Shelter. Etc.

I Hope U Got The Point.
Take Care
A H