Same difference.
If true, then say COMMUNISM!!! Do your own survey -- most folks DO NOT know what marxism or a marxist is. I've been doing "on the street" type interviews of folks 16-88. Not one of them could articulate what marxism is and only a few knew who Marx was. Some of the older people had at least a Master's degree.
That was my point. We call them liberals, progressives, marxists, left wing -- they are damn COMMUNISTS! Call them what they are! Until we consistently call them what they are, we lose.