matter

subject matter

talking point

count, idea, point, purpose

consideration, issue, problem

body, bulk, burden, centerpiece, core, crux, essence, fundamental, generality, gist, grist, heart, kernel, keynote, main, marrow, mass, net, nub, nubbin, nucleus, pith, pivot, purport, quick, staple, substance, sum

consideration, issue, problem

crisis, crossroad(s), crunch, emergency, exigency, flash point, head, juncture, strait, zero hour

concern, trouble, worry

care, lookout, responsibility

corner, fix, hole, jam, pickle, pinch, predicament, scrape, spot

airmail, airpost, certified mail, registered mail, rural delivery, rural free delivery, special delivery, special handling

direct mail, junk mail, mailer

card, dispatch, epistle, letter, message, missive, note, postal card, postcard, printed matter

issue, question

corner, fix, hole, hot water, jam, mire, pickle, predicament, quagmire, spot

crux, toughie (also toughy)

dilemma, quandary

catch, glitch, hitch, pitfall, snag

conundrum, enigma, mystery, puzzle, puzzlement, riddle

brainteaser, poser, stumper

ballpark

nearness, proximity