social system vs social organization

social system and social organization both are nouns.

Word	Noun	Adjective	Verb	Adverb
social system	Yes	No	No	No
social organization	Yes	No	No	No

As nouns, social system and social organization are synonyms defined as:

social system and social organization: the people in a society considered as a system organized by a characteristic pattern of relationships

Other synonyms of social system include social organisation, social structure, structure.

social system (noun)	social organization (noun)
the people in a society considered as a system organized by a characteristic pattern of relationships	the people in a society considered as a system organized by a characteristic pattern of relationships