It is one. Fascism, in the historical sense, refers to post-WWI ideologies that blended paramilitaries (the term, after all, was originally fascio de combattimento, referring to extremist gangs on 'roids created by Benny the Moose) with a party-state based on a military ethnocracy. The closest analogues are Velayat-i-faqih and the Jim Crow South, both of which fail on a couple of very vital accounts.

Fascism, like communism, is a word with a specific social-cultural context, and fascism and communism are two vastly different ideologies.