What are the pros and cons of communism?

Positive aspect of the Communism is, the creation of the social security for the populations, by the government providing the free health care and free education toward citizens, as we can see in the Communist countries.

Negative aspect of the Communism is the limitation toward citizens' economic freedom (as it was and currently practiced in a die-hard Communist countries), by making the State sector more involvement in the economy, and limiting private ownership. This could 'kill' the citizens' economic activity and economic innovations, and the economy would be inefficiently managed.  

So the conclusion is, Communism brought a better living for the ordinary citizens, but killing the economic freedom on its citizens (as it was and currently practiced in a die-hard Communist countries).

postive, comparative, superlative - good, better, best

recall how we defined nouns as words capable of having plurals and possessive endings. adjectives (and their first cousin, the adverb) also have a feature that distinguishes them. they come in three states. first, the raw adjective—in its positive state—merely describes the noun modified; it doesn’t care about how this particular person or thing stacks up against other members of the same noun class

don't enter the room

explanation:

or you can just ask him to move away from his house