socialism vs communism

socialism and communism both are nouns.

Word	Noun	Adjective	Verb	Adverb
socialism	Yes	No	No	No
communism	Yes	No	No	No

As nouns, communism is a hyponym of socialism; that is, communism is a word with a more specific, narrower meaning than socialism:

Other hyponyms of socialism include International, national socialism, Naziism, Nazism.

socialism (noun)	communism (noun)
a political theory advocating state ownership of industry	a political theory favoring collectivism in a classless society
an economic system based on state ownership of capital	a form of socialism that abolishes private ownership