| decorum(noun, regulation, order, system) |
| decretion(noun, regulation, order, test) |
| doctrine(noun, rule, notion, fundamental) |
| dogma(noun, rule, notion, fundamental) |
| etiquette(noun, regulation, order, style) |
| fundamental(noun, regulation, order, rule) |
| gnome(noun, regulation, order, test) |
| ground(noun, regulation, rule, standard) |
| guide(noun, regulation, order, rule) |
| instruction(noun, medicine, regulation, treatment) |
| keynote(noun, regulation, order, test) |
| keystone(noun, regulation, order, test) |
| origin(noun, regulation, rule, standard) |
| precedent(noun, regulation, order, style) |
| propriety(noun, regulation, order, system) |
| regimen(noun, regulation, order, test) |
| source(noun, regulation, rule, standard) |
| directive(noun, regulation, decree, instruction) |
| ethic(noun, rule, notion, fundamental) |
| foundation(noun, regulation, rule, standard) |