| inherent(adjective, natural, essential, basic, innate) |
| main(adjective, important, significant, usual, essential) |
| primal(adjective, pure, primary, primeval) |
| first(adjective, order, violent, important, opening) |
| original(adjective, characteristic, body, simple, plain) |
| axiom(noun, law, support, regulation, action) |
| basis(noun, law, regulation, action, drop) |
| indispensable(adjective, characteristic, important, significant, natural) |
| principle(noun, law, support, action, drop) |
| requisite(noun, adjective, important, need, significant) |
| simple(adjective, top, pure, straightforward, whole) |
| base(noun, adjective, support, regulation, action) |
| important(adjective, significant, original, essential, critical) |
| rudiment(noun, support, action, part, base) |
| bottom(noun, adjective, cause, start, base) |
| constitutional(adjective, important, natural, essential, basic) |
| element(noun, feature, drop, part, concern) |
| law(noun, support, regulation, action, order) |
| primitive(adjective, body, simple, plain, material) |
| primordial(adjective, violent, important, head, beginning) |