Canons are a set of rules or principles that are considered standard or official. Some synonyms for canons include guidelines, tenets, maxims, precepts, laws, regulations, protocols, doctrines, and codes. These words refer to a set of established rules or guidelines that provide a framework for behavior, beliefs, or practices. While some synonyms like protocols and codes may be specific to certain industries or professions, tenets and maxims are more widely applicable and could be used in a variety of contexts. Ultimately, these words all convey the idea of a set of established and accepted rules that are intended to guide behavior and provide structure.