| omphalos(noun, center, middle, target, belly button) |
| umbilicus(noun, centrality, belly button, omphalos, omphalus) |
| bellybutton(noun, belly button, omphalos, umbilicus, omphalus) |
| focus(noun, base, capital, core, center) |
| core(noun, center, middle, target, centrality) |
| belly button(noun, expression, idiom, omphalos, umbilicus) |
| omphalus(noun, belly button, omphalos, umbilicus) |
| heart(noun, center, middle, target, centrality) |
| hub(noun, center, middle, target) |
| marrow(noun, center, middle, target, centrality) |
| nave(noun, center, middle, target, centrality) |
| nucleus(noun, center, middle, target, centrality) |
| axis(noun, center, middle, target) |
| kernel(noun, center, middle, target, centrality) |
| midst(noun, center, middle, target) |
| center(noun, point, average, focus, middle) |
| middle(noun, average, center, focus, middle) |
| centre |
| midpoint(noun, center, middle, target) |
| epicenter(focus, middle, midpoint) |