socialism vs ideology

socialism and ideology both are nouns.

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

As nouns, ideology is a hypernym of socialism; that is, ideology is a word with a broader meaning than socialism:

socialism: a political theory advocating state ownership of industry
ideology: an orientation that characterizes the thinking of a group or nation

Other hypernyms of socialism include political orientation, political theory.

socialism (noun)	ideology (noun)
a political theory advocating state ownership of industry	an orientation that characterizes the thinking of a group or nation
an economic system based on state ownership of capital	imaginary or visionary theorization