mores

US /ˈmɔːr.eɪz/
UK /ˈmɔːr.eɪz/
1.

costumes, usos, convenções

the essential or characteristic customs and conventions of a community

:
The traditional mores of the tribe were strictly observed.
Os costumes tradicionais da tribo eram estritamente observados.
Changing social mores have impacted public opinion.
Os costumes sociais em mudança impactaram a opinião pública.