| motive(cause, reason, source, basis, justification) |
| nexus(noun, support, action, base, beginning) |
| nucleus(noun, support, action, cause, start) |
| obelisk(support, post, pillar, monument) |
| occasion(cause, reason, source, basis, justification) |
| origin(cause, base, source, foundation, basis) |
| pavement |
| pedestal(support, rest, base, post, center) |
| peg(noun, support, stay, bar, prop) |
| peristyle(support, post, pillar, monument) |
| pier(noun, support, post, prop, pillar) |
| pilaster(support, post, pillar, monument) |
| platform(noun, hold, block, back, base) |
| pole(noun, support, hold, block, back) |
| post(noun, support, hold, block, back) |
| postulate(noun, support, action, base, beginning) |
| premise(noun, support, action, cause, reason) |
| preparation(noun, base, basis) |
| presumption(noun, support, action, base, beginning) |
| presupposition(noun, support, action, base, beginning) |