Same word as nave:

axis, bull's-eye, centrality, centriole, centrum, core, cynosure, equidistance, essence, focal point, focus, gist, heart, hotbed, hub, inside, interior, intermediacy, kernel, mainstream, marrow, middle of the road, midpoint, midst, nave, navel, nucleus, omphalos, pith, pivot, place, polestar, quick, radial point, root, seat