On one hand, we might try to carefully, precisely define them. But on the other, we could use these words the same way the left used words and phrases like “racism” or “white supremacy” - that is, as weaponized floating signifiers. For example, to charge that Biden and Harris are ushering in “communism.” In a post-truth world definitions lose their political relevance.
biden/harris are ushering in fascism
China is now fascist. They have a tightly controlled private sector but the individuals only have rights that the state allows.