Mores (, sometimes ; from Latin mōrēs [ˈmoːreːs], plural form of singular mōs, meaning "manner, custom, usage, or habit") are social norms that are widely observed within a particular society or culture. Mores determine what is considered morally acceptable or unacceptable within any given culture. A folkway is what is created through interaction and that process is what organizes interactions through routine, repetition, habit and consistency.

William Graham Sumner (1840–1910), an early U.S. sociologist, introduced both the terms "mores" (1898) and "folkways" (1906) into modern sociology.

Mores are strict in the sense that they determine the difference between right and wrong in a given society, people may be punished for their immorality which is common place in many societies in the world, at times with disapproval or ostracizing. The main examples of traditional customs and conventions that are mores may include; lying, cheating, causing harm, alcohol use, drug use, marriage beliefs, gossip, slander, jealousy, disgracing or disrespecting parents, refusal to attend a funeral, politically incorrect humor, sports cheating, vandalism, leaving trash, plagiarism, bribery, corruption, saving face, respecting your elders, religious prescriptions and fiduciary responsibility.

Folkways are ways of thinking, acting and behaving in social groups which are agreed upon by the masses and are useful for the ordering of society. Folkways are spread through imitation, oral means or observation, and are meant to encompass the material, spiritual and verbal aspects of culture. Folkways meet the problems of social life, we feel security and order from their acceptance and application. Examples of folkways include: acceptable dress, manners, social etiquette, body language, posture, level of privacy, working hours and five day work week, acceptability of social drinking - abstaining or not from drinking during certain working hours, actions and behaviours in public places, school, university, business and religious institution, ceremonial situations, ritual, customary services and keeping personal space.