There are several synonyms for the word "social procedure" that one can use depending upon the context and how formal they wish to sound. Some alternative phrases are social protocol, formalities, etiquette, conventions, customs, and traditions. Social protocol and formalities both suggest a more rigid and structured approach to social interactions, while etiquette, conventions, customs, and traditions are more relaxed and reflect the norms and habits of a particular culture or community. Some other synonyms could include social code and social norm, which both refer to the unwritten rules that govern how individuals should interact with each other in a social setting.