Synonyms to foundation stone

cornerstone, bench mark, cardinal point, chief thing, climax, core, crisis, critical point, crux, essence, essential, essential matter, first stone, footstone, fundamental, gist, gravamen, great point, headstone, heart, high point, important thing, issue, kernel, keystone, landmark, main point, main thing, material point, meat, milestone, nub, pith, pivot, quoin, real issue, salient point, sine qua non, substance, substantive point, the bottom line, the point, turning point, arch, barrow, boundary stone, brass, bust, cairn, cenotaph, column, cromlech, cross, cup, cyclolith, dolmen, grave, gravestone, hoarstone, inscription, ledger, marker, mausoleum, megalith, memento, memorial, memorial arch, memorial column, memorial statue, memorial stone, menhir, monolith, monument, mound, necrology, obelisk, obituary, pillar, plaque, prize, pyramid, reliquary, remembrance, ribbon, rostral column, shaft, shrine, stela, stone, stupa, tablet, testimonial, tomb, tombstone, tope, trophy, bras