| union(noun, join, point, connection, link) |
| association(noun, connection, link, tie, bond) |
| base(noun, support, action, connection, link) |
| catenation(noun, connection, link, tie, bond) |
| consecution(noun, connection, link, tie, bond) |
| linkage(noun, join, system, connection, link) |
| progression(noun, connection, link, tie, bond) |
| string(noun, connection, link, tie, bond) |
| train(noun, connection, link, tie, bond) |
| ground zero(noun, expression, connection, link, tie) |
| heart(noun, support, action, point, base) |
| nucleus(noun, support, action, point, base) |
| sequence(noun, connection, link, tie, bond) |
| cynosure(noun, connection, link, tie, bond) |
| epicenter(noun, connection, link, tie, bond) |
| locus(noun, connection, link, tie, bond) |
| mecca(noun, connection, link, tie, bond) |
| middle(noun, connection, link, tie, bond) |
| navel(noun, connection, link, tie, bond) |
| nerve center(noun, expression, connection, link, tie) |