What is fascism and what makes it different from nazism?

Fascism-Fascism is a form of far-right, authoritarian ultra-nationalism characterized by dictatorial power, forcible suppression of opposition, and strong regimentation of society and of the economy which came to prominence in early 20th-century

Explanation:

It's difference because National Socialism, more commonly known as Nazism, is the ideology and practices associated with the Nazi Party-officially the National Socialist German Workers' Party - in Nazi Germany, and of other far-right groups with similar ideas and aims.