| plinth |
| pole(noun, hold, block, back, base) |
| post(noun, hold, block, back, base) |
| postulate(noun, support, action, base, beginning) |
| premise(noun, support, action, cause, reason) |
| presumption(noun, support, action, base, beginning) |
| presupposition(noun, support, action, base, beginning) |
| principal element(noun, expression, support, action, base) |
| proof(noun, support, action, cause, reason) |
| prop(noun, support, hold, block, back) |
| radical |
| rampart(noun, hold, block, back, base) |
| reinforcement(noun, hold, block, back, base) |
| resting place(noun, expression, idiom, support, balance) |
| rib(noun, hold, block, back, base) |
| rod(noun, hold, block, back, base) |
| sanction(noun, support, action, base, beginning) |
| seam |
| seating(noun, support, rest, base, balance) |
| security(noun, support, action, base, beginning) |