Bolshevist vs communist

Bolshevist and communist both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bolshevist	Yes	Yes	No	No
communist	Yes	Yes	No	No

As nouns, communist is a hypernym of Bolshevist; that is, communist is a word with a broader meaning than Bolshevist:

Bolshevist: a Russian member of the left-wing majority group that followed Lenin and eventually became the Russian communist party
communist: a socialist who advocates communism

Other hypernyms of Bolshevist include commie.

Bolshevist (noun)	communist (noun)
a Russian member of the left-wing majority group that followed Lenin and eventually became the Russian communist party	a socialist who advocates communism

Bolshevist (adjective)	communist (adjective)
of or relating to Bolshevism	relating to or marked by communism