AskHistorians

Both are/were leading popular fascist movements in liberal democracies with the expressed intent of undoing any semblance of democratic will for the voting populace. Their playbook is to vilify non white people and immigrants and focus on giving preferential rights to white people who play the game. Those who did not either fled, got locked up, or were executed. The focus on a specific subset of people is further reinforced by their strict obsession with a historic reductive or fictionalized nationalism and/or manifest destiny.

Both have had failed insurrections with soft consequences for the leaders who incited and participated in the events. (see Beer Hall Putsch)

Fascist movements can have unique aspects that make them different from each other. Nazi Germany was different than Mussolini's Italy, or Franco's Spain, etc etc. Just because they have these aspects does not exclude them from being fascist and doing a lot of harm to people. See the image from the US Holocaust Memorial Museum.

Listen and learn from history.

The last edit, promise.