| focal point(noun, center, middle, target) |
| gist(noun, center, middle, target) |
| incubator |
| inside(noun, center, middle, target) |
| interior(noun, center, middle, target) |
| intermediacy(noun, center, middle, target) |
| kernel(noun, center, middle, target, centrality) |
| mainstream(noun, center, middle, target) |
| marrow(noun, center, middle, target, centrality) |
| middle of the road(noun, center, middle, target) |
| midpoint(noun, center, middle, target) |
| midst(noun, center, middle, target) |
| nave(noun, center, middle, target, centrality) |
| navel(noun, center, middle, target, centrality) |
| nucleus(noun, center, middle, target, centrality) |
| omphalos(noun, center, middle, target) |
| pith(noun, center, middle, target, centrality) |
| pivot(noun, center, middle, target) |
| place(noun, center, middle, target) |
| polestar(noun, center, middle, target) |