N  discord, disagreement, discord, disaccord, dissidence, dissonance, jar, clash, shock, jarring, jostling, screw loose, variance, difference, dissension, misunderstanding, cross purposes, odds, brouillerie, division, split, rupture, disruption, division in the camp, house divided against itself, disunion, breach, schism, feud, faction, quarrel, dispute, tiff, tracasserie, squabble, altercation, barney, demel_e, snarl, spat, towrow, words, high words, wrangling, jangle, brabble, cross questions and crooked answers, snip-snap, family jars, polemics, litigation, strife, warfare, outbreak, open rupture, declaration of war, broil, brawl, row, racket, hubbub, rixation, embroilment, embranglement, imbroglio, fracas, breach of the peace, piece of work, scrimmage, rumpus, breeze, squall, riot, disturbance, commotion, bear garden, Donnybrook, Donnybrook Fair, subject of dispute, ground of quarrel, battle ground, disputed point, bone of contention, bone to pick, apple of discord, casus belli, question at issue, vexed question, vexata quaestio, brand of discord, troublous times, cat-and-dog life, contentiousness, enmity, hate, Kilkenny cats, disputant, strange bedfellows, discordant, disagreeing, out of tune, ajar, on bad terms, dissentient, unreconciled, unpacified, contentious, quarrelsome, unpacific, gladiatorial, controversial, polemic, disputatious, factious, litigious, litigant, pettifogging, at odds, at loggerheads, at daggers drawn, at variance, at issue, at cross purposes, at sixes and sevens, at feud, at high words, up in arms, together by the ears, in hot water, embroiled, torn, disunited, quot homines tot sententiae, no love lost between them, non nostrum tantas componere lites, Mars gravior sub pace latet, discord, discordance, dissonance, cacophony, want of harmony, caterwauling, harshness, Babel, Dutch concert, cat's concert, marrowbones and cleavers, discordant, dissonant, absonant, out of tune, tuneless, unmusical, untunable, unmelodious, immelodious, unharmonious, inharmonious, singsong, cacophonous, harsh, jarring.

N  error, fallacy, misconception, misapprehension, misstanding, misunderstanding, inexactness, laxity, misconstruction, miscomputation, non sequitur, mis-statement, mis-report, mumpsimus, mistake, miss, fault, blunder, quiproquo, cross purposes, oversight, misprint, erratum, corrigendum, slip, blot, flaw, loose thread, trip, stumble, botchery, slip of the tongue, slip of the lip, Freudian slip, slip of the pen, lapsus linguae, clerical error, bull, haplography, illusion, delusion, snare, false impression, false idea, bubble, self-decit, self-deception, mists of error, heresy, hallucination, false light, dream, fable, bias, misleading, erroneous, untrue, false, devoid of truth, fallacious, apocryphal, unreal, ungrounded, groundless, unsubstantial, heretical, unsound, illogical, inexact, unexact inaccurate, incorrect, indefinite, illusive, illusory, delusive, mock, ideal, spurious, deceitful, perverted, controvertible, unsustainable, unauthenticated, untrustworthy, exploded, refuted, discarded, in error, under an error, mistaken, tripping, out, out in one's reckoning, aberrant, beside the mark, wide of the mark, wide of the truth, way off, far off, astray, on a false scent, on the wrong scent, in the wrong box, outside the ballpark, at cross purposes, all in the wrong, all out, more or less, errare est humanum, mentis gratissimus error, on the dubious waves of error tost, to err is human, to forgive divine, you lie -- under a mistake.

at cross purposes, calvary cross, celtic cross, cross, cross bit, cross bun, cross country, cross dressing, cross examination, cross examine, cross eye, cross fire, cross grained, cross hair, cross hatching, cross infection, cross of calvary, cross of lorraine, cross off, cross oneself, cross out, cross product, cross question, cross section, cross street, cross thwart, cross vine, cross wire, dihybrid cross, distinguished flying cross, distinguished service cross, double cross, for all intents and purposes, for all practical purposes, greek cross, half cross stitch, holy cross, hot cross bun, jerusalem cross, latin cross, lorraine cross, low st andrew's cross, maltese cross, market cross, monohybrid cross, navy cross, northern cross, papal cross, patriarchal cross, peltier's cross, reciprocal cross, red cross, sign of the cross, southern cross, st andrews's cross, st. andrew's cross, st. anthony's cross, station of the cross, stations of the cross, tau cross, to all intents and purposes, victoria cross