| linchpin(noun, idea, standard, foundation, essence) |
| main point(noun, expression, essence, profit, core) |
| marrow(noun, quality, cause, start, character) |
| measure(noun, organization, study, increase, plan) |
| model(noun, concept, law, regulation, order) |
| motivation(noun, cause, reason, object, matter) |
| necessity(noun, cause, reason, heart, essential) |
| nitty-gritty(noun, law, quality, character, strength) |
| opinion(noun, measure, belief, standard, principle) |
| outlook(understanding, philosophy, plan, position, system) |
| particulars |
| pavement |
| pedestal(noun, support, rest, base, foundation) |
| pith(noun, organization, area, quality, body) |
| place(noun, base, station, headquarters, HQ) |
| preparation(noun, development, base, training, research) |
| radix(cause, source, origin) |
| resting place(noun, expression, idiom, support, base) |
| riprap |
| rise(noun, cause, top, opening, source) |