What part of speech is communism?

"Communism" can be a few different parts of speech, depending on how it's used:

* Noun: This is the most common usage. It refers to the political and economic ideology that aims for a classless society with communal ownership of the means of production.

* Example: "He studied the history of communism in the Soviet Union."

* Adjective: It can describe something related to communism.

* Example: "The country experienced a communist revolution."

* Proper noun: It can also refer to a specific communist party or movement.

* Example: "The Communist Party of China."

So, without context, it's hard to definitively say which part of speech it is.