| fundamental(adjective, body, simple, plain, material) |
| organic(adjective, important, natural, original, basic) |
| elementary(adjective, start, simple, plain, pure) |
| primary(adjective, body, simple, lead, plain) |
| essential(adjective, body, simple, plain, material) |
| basic(adjective, body, start, simple, plain) |
| elemental(adjective, body, simple, plain, material) |
| radical(adjective, base, important, significant, last) |
| base(noun, adjective, lead, head, master) |
| underlying(adjective, simple, plain, base, important) |
| beginning(noun, adjective, start, simple, easy) |
| foundational(adjective, simple, base, pure, important) |
| primal(adjective, lead, pure, head, master) |
| rudimentary(adjective, start, simple, important, straightforward) |
| simple(adjective, pure, straightforward, basic, fundamental) |
| bottom(noun, adjective, important, significant, original) |
| cardinal(noun, adjective, lead, important, head) |
| prime(adjective, body, lead, material, pure) |
| rudimental(adjective, start, simple, elementary) |
| central(adjective, lead, head, master, boss) |