You can't tell us the difference, because there is no difference.
Why must you be spoon-fed? Can you not be a man, for once? One is about Political Liberty, the other Economic Communalism. One uses the Free Market (generally), one is a Command and Control (centralized administration) system. They have different names because they are
different. Stop posting like a child, it's annoying.
Modern Left Wing Liberalism has NOTHING to do with liberty.
Now, as you've proven, there isn't a difference between Communism and any other Leftist ideology. That revelation means that we might as well refer to them all as Communism.
What about communism do you think people are going to willingly accept? The answer is, nothing. Historically communism has had to have been forced upon the people. When communists needed to, they resorted to murder, when they didn't get their way.
The big question, is how long before American Liberals start killing people to forse their ideology on the people?