(n.) The quality or state of being other or different; alterity; oppositeness.

abominability accord addition adjunct affairs affiliation affinity alliance antagonism anteposition antipathy antithesis approximation assemblage association asymmetry backlash bad blood baseness beastliness bond clashing closeness collision combination competition con conflict confrontation confrontment confutation connectedness connection contemptibility contention contiguity contradiction contradistinction contraposition contrariness contrast counteraction counterposition counterworking crankiness cross-purposes crotchetiness crudeness dealings deduction departure despicability despicableness deviation difference disaccord disaccordance disagreement disconformity discongruity discordance discrepancy discreteness disequilibrium disgustingness disjunction disparity disproportion dissension dissent dissimilarity dissonance distinction distinctness divergence divergency diversity enmity far cry filiation foulness fractiousness friction fulsomeness grossness harshness hatefulness heinousness heterogeneity homology hostility ignobility imbalance inaccordance inadequacy incompatibility incongruity inconsistency inconsonance inequality inequity inharmoniousness inharmony inimicalness injustice insufficiency intercourse interference intimacy irreconcilability irregularity junction kick liaison link linkage linking loathsomeness mixture mutual attraction nastiness nauseousness nearness negativeness noisomeness noncompliance nonconcurrence nonconformance nonconformism nonconformity noncooperation nonobservance nonuniformity noxiousness objectionability objectionableness obnoxiousness obscenity obstinacy odds odiousness offensiveness opposing opposition opposure oppugnance oppugnancy originality otherness overbalance perverseness polar opposition polarity polarization posing against propinquity protest proximity putridity putridness rapport reaction rebarbativeness recalcitrance recoil recusance recusancy refractoriness relatedness relation relations relationship renitency repellence repellency repercussion repugnance repulsiveness resistance revolt rivalry rottenness separateness shortcoming similarity swimming upstream sympathy tie tie-in unbalance unconformity uncooperativeness unevenness unfair discrimination union unlikeness unorthodoxy unspeakableness variance variation variegation variety vileness vying