| cynosure(noun, center, middle, target) |
| epicenter(noun, focus, middle, midpoint) |
| heart and soul(noun, expression, idiom) |
| inner man(noun, expression, idiom, intellect, affections) |
| intermediate(adjective, middle) |
| keynote(noun, support, action, substance, idea) |
| keystone(noun, support, action, idea, base) |
| matter(noun, organization, good, area, understanding) |
| meaning(noun, quality, understanding, character, strength) |
| medial(adjective, middle) |
| medium(noun, adjective, middle) |
| nubbin(essence, nut, seed, grain, crux) |
| omphalos(noun, center, middle, target) |
| origin(noun, cause, start, base, beginning) |
| pit(noun, verb, stone, nut, seed) |
| polestar(noun, place, emotion, quick, heart) |
| principle(noun, support, action, quality, character) |
| seat(noun, place, cause, start, base) |
| seed(noun, verb, cause, start, base) |
| subject(noun, strength, substance, issue, idea) |