Aesthetic mainly. The are both manifestations of the same decay of capitalism.
Nazism was the ideology of the Nazi party in 1930s Germany, and Fascism was the ideology of Italy under Mussolini. The main difference was that Nazism had more of an emphasis on racial purity and racism, whereas fascism was more focused on totalitarian, authoritarian control.
In the context of insulting a modern day extreme right wing person though, they’re pretty much synonymous.
I understand all Nazis are fascists, but not all fascists are Nazis
It usually doesn’t matter
I feel like each answer here is wrong and right.
Literally, Nazi was a shortened version of National Socialist, and was the anglicized name for the German party that Adolf Hitler rose to power in.
In the vernacular, Nazi is a somewhat catch all to describe various fractions and identified ideologies which the broad usage I think hurts discourse.
Some people mean in this general way, any racist, or ethnostate advocate could be considered a Nazi, as could any racist or fascist group.
I’m not for any of it, but the fluidity of usage ends up feeling like hyperbole when someone is not a literal Nazi, or doesn’t even share Nazi values and beliefs.
When describing our enemies, I think static definition matters, because inaccuracies can be an attack surface to dismantle arguments.
Nazi refers to the German Nazi party, while “fascist” refers to broad reactionary movements usually found in decaying Capitalist countries as a safeguard against rising Socialist or Communist sympathies among the Working Class, with its own unique set of aspects like ethno-centrism, xenophobia, intense millitarization, etc.