| heart(noun, place, part, force, quality) |
| core(noun, organization, place, area, quality) |
| essence(noun, organization, place, area, feeling) |
| marrow(noun, place, quality, feeling, cause) |
| substance(noun, organization, health, area, force) |
| gist(noun, organization, place, area, force) |
| kernel(noun, place, quality, body, character) |
| nucleus(noun, place, quality, body, cause) |
| meat(noun, force, quality, understanding, body) |
| nub(noun, quality, body, cause, start) |
| quintessence(noun, quality, feeling, cause, start) |
| crux(noun, organization, area, part, quality) |
| significance(noun, quality, understanding, body, character) |
| point(noun, quality, understanding, character, strength) |
| center(noun, place, body, cause, start) |
| soul(noun, quality, cause, start, character) |
| focus(noun, place, body, strength, point) |
| strength(noun, action, go, force, body) |
| nitty-gritty(noun, force, quality, understanding, character) |
| force(noun, health, feeling, understanding, body) |