Mores (/ˈmɔːreɪz/, sometimes /ˈmɔːriːz/; 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.