crusade (noun) crusade: campaign for cause
Sinonime: axis, bull's-eye, centrality, centriole, centrum, core, cynosure, equidistance, essence, focal point, focus, gist, heart, hotbed, hub, inside, interior, intermediacy, kernel, mainstream*, marrow, median,
middle, middle of the road, midst, nave, navel, nucleus, omphalos, pith, pivot, place, polestar, quick*, radial point, root, seat