social structure vs social organization

social structure and social organization both are nouns.

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

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

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

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

social structure (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