folkway

kansanviisaus A custom or belief common to members of a society or culture
1996, Roberto Gonzalez Echevarría, ‎Enrique Pupo-Walker, The Cambridge History of Latin American Literature:

Avila was certainly well prepared to comment authoritatively on the folkways of his ancestors; he spoke fluent Quechua and had spent many years among the Peruvian Indians as a missionary.