Aw heck, Communism Fascism - What difference does it make?
None actually. Jonah Goldberg in his book Liberal Fascism makes the point that these are not opposite ends of political or ideological spectrums. Rather more like the point where the ends of two strings meet when enjoined in a circle.
It was the communists that fostered the great divide by attacking fascists to draw adherents to their side. Kind of like the DUI today. There is no greater hatred than among one’s own.
The trouble is, Goldberg is a mental midget who doesn't know his history.
The Communists seized the property of and often executed industrialists, aristocrats, and landowners. The Nazis restored property that aristocrats lost under the Weimar Republic, and not only did (non-Jewish) industrialists keep their factories and money, many like Porsche and Krupp got very wealthy under Nazi patronage, as did many prominent German banking families. The same was true in Fascist Italy. That's why there was a great deal of sympathy for Nazis and Fascists among much of Britain's nobility and among many prominent industrialists in both the UK and the US.
In Latin America and Spain, the Soviets backed peasant uprisings, the Fascists and Nazis backed the old landowner patron families and the military juntas.
Fascists and National Socialists were intensely nationalistic, communists were internationalists who (at least in theory) opposed racialism and ethnocentrism.
Other than that, no, I guess there was really no difference at all!