cornerstone (redirected from corner stone)

cornerstone noun backbone, base, body, cardinal point, core, corpus, critical point, crucial point, crux, essence, essential matter, exigency, foundation, frame of reference, fundamental, gravamen, groundwork, heart, highlight, key, keynote, keystone, landmark, main body, main element, main point, main thing, mainstay, major event, major part, material point, matter of concern, matter of importance, milestone, nucleus, pedestal, pivot, princiial part, principle, purport, purpose, quintessence, salient point, sine qua non, standard, substance, support, terra firma, threshold

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See also: basis, corpus, foundation, gravamen, mainstay