Synonyms to real issue

crux, Calvary cross, Chinese puzzle, Christogram, Gordian knot, Greek cross, Jerusalem cross, Latin cross, Maltese cross, Russian cross, T, X, ankh, avellan cross, baffling problem, bench mark, brain twister, cardinal point, catch, chi, chi-rho, chief thing, christcross, climax, core, cornerstone, crisis, crisscross, critical point, cross, cross ancre, cross botonee, cross bourdonee, cross fitche, cross fleury, cross formee, cross fourchee, cross grignolee, cross moline, cross of Cleves, cross of Lorraine, cross patee, cross recercelee, cross-crosslet, crossbones, crosslet, crossword puzzle, crucifix, cruciform, crux ansata, crux capitata, crux decussata, crux gammata, crux immissa, crux ordinaria, dagger, dilemma, enigma, enigmatic question, essence, essential, essential matter, ex, exing, floorer, fork cross, fundamental, gammadion, gist, gravamen, great point, heart, high point, hitch, important thing, inverted cross, issue, jigsaw puzzle, joker, kernel, keystone, knot, knotty point, landmark, long cross, main point, main thing, material point, matter, meat, milestone, mind-boggler, mystery, node,