| essential(adjective, support, action, base, importance) |
| key(noun, adjective, lead, importance, head) |
| nexus(noun, support, action, point, base) |
| pivot(noun, support, place, point, answer) |
| gist(noun, meaning, essence, be) |
| base(noun, adjective, organization, support, action) |
| burden(noun, good, quality, understanding, character) |
| central(adjective, lead, head, master, essential) |
| interior(noun, adjective, place, quick, heart) |
| nitty-gritty(noun, adjective, good, quality, understanding) |
| root(noun, support, action, place, quality) |
| midst(noun, center, middle, gist, target) |
| point(noun, support, quality, understanding, character) |
| inside(noun, place, quick, heart, center) |
| quiddity(noun, quality, character, spirit, significance) |
| sum(noun, organization, area, piece, review) |
| basis(noun, organization, action, area, quality) |
| breast(noun, spirit, feelings, heart, intellect) |
| mainstream(noun, adjective, characteristic, quality, standard) |
| material(adjective, organization, area, importance, question) |