1.  dissonance(n = noun.state) disagreement, dissension - a conflict of people's opinions or actions or characters;
is a kind of conflict
has particulars: disunity, divide

2.  dissonance(n = noun.cognition) noise, racket - the auditory experience of sound that lacks musical quality; sound that is a disagreeable auditory experience; "modern music is just noise to me"
is a kind of auditory sensation, sound
Derived forms adjective dissonant₁, verb dissonate₂

3.  dissonance(n = noun.attribute) - disagreeable sounds;
is a kind of sound property
has particulars: discord, discordance, disharmony, inharmoniousness, cacophony
Antonym: harmony
Derived forms adjective dissonant₂, verb dissonate₂

N  disagreement, discord, discordance, dissonance, dissidence, discrepancy, unconformity, incongruity, incongruence, discongruity, mesalliance, jarring, dissension, conflict, bickering, clashing, misunderstanding, wrangle, disparity, mismatch, disproportion, dissimilitude, inequality, disproportionateness, variance, divergence, repugnance, unfitness, inaptitude, impropriety, inapplicability, inconsistency, inconcinnity, irrelevancy, misjoining, misjoinder, syncretism, intrusion, interference, concordia discors, fish out of water, disagreeing, discordant, discrepant, at variance, at war, hostile, antagonistic, repugnant, incompatible, irreconcilable, inconsistent with, unconformable, exceptional, intrusive, incongruous, disproportionate, disproportionated, inharmonious, unharmonious, inconsonant, unconsonant, divergent, repugnant to, inapt, unapt, inappropriate, improper, unsuited, unsuitable, inapplicable, not to the point, unfit, unfitting, unbefitting, unbecoming, illtimed, unseasonable, mal a propos, inadmissible, inapposite, uncongenial, ill-assorted, ill-sorted, mismatched, misjoined, misplaced, misclassified, unaccommodating, irreducible, incommensurable, uncommensurable, unsympathetic, out of character, out of keeping, out of proportion, out of joint, out of tune, out of place, out of season, out of its element, at odds with, at variance with, in defiance, in contempt, in spite of, discordantly, a tort et a travers, asinus ad lyram.

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, 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.