| navel(noun, center, middle, target, centrality) |
| root(noun, support, action, place, quality) |
| embryo(noun, cause, start, influence, base) |
| principle(noun, support, action, quality, cause) |
| bud(noun, cause, start, plant, beginning) |
| foundation(noun, body, cause, start, substance) |
| point(noun, support, quality, character, spirit) |
| axis(noun, center, middle, target) |
| focal point(noun, expression, support, place, point) |
| nexus(noun, support, action, point, base) |
| omphalos(noun, center, middle, target) |
| seed(noun, cause, start, influence, base) |
| spark(noun, cause, start, beginning, shoot) |
| cell nucleus(noun, expression, idiom) |
| epicenter(noun, focus, middle, midpoint) |
| gravamen(noun, importance, heart) |
| hotbed(noun, center, middle, target, centrality) |
| interior(noun, center, middle, target) |
| karyon |
| mean(noun, middle) |