| momentous(adjective, feature, state, characteristic, importance) |
| innate(adjective, characteristic, body, reasonable, material) |
| chief(adjective, importance, big, important, significant) |
| prerequisite(noun, adjective, form, fix, pass) |
| material(noun, adjective, drop, body, physical) |
| necessity(noun, condition, want, need, heart) |
| central(adjective, important, significant, original, basic) |
| pivotal(adjective, feature, state, characteristic, important) |
| cardinal(adjective, importance, important, significant, original) |
| inborn(adjective, characteristic, reasonable, common, ordinary) |
| substantial(adjective, physical, importance, material, big) |
| constitutive(adjective, importance, important, valuable, surface) |
| deep-seated(adjective, characteristic, natural, original, basic) |
| integral(adjective, characteristic, body, importance, material) |
| requirement(noun, form, fix, pass, position) |
| core(adjective, support, action, base, importance) |
| critical(adjective, severe, big, important, significant) |
| inbred(adjective, characteristic, natural, individual, basic) |
| underlying(adjective, simple, plain, important, significant) |
| constitutional(adjective, important, natural, basic, surface) |