polarity (n.)

• ambiguity
• ambivalence
• antagonism
• antipathy
• antithesis
• balance
• bifurcation
• collision
• conflict
• conformity
• confrontation
• congruity
• conjugation
• consistency
• contention
• contradiction
• contradistinction
• contraindication
• contrariety
• contrast
• correspondence
• dichotomy
• disagreement
• discrepancy
• doublethink
• doubling
• dualism
• duality
• duplication
• duplicity
• equality
• equilibrium
• eurythmics
• eurythmy
• evenness
• finish
• harmony
• hostility
• inconsistency
• irony
• keeping
• oppositeness
• opposition
• pairing
• parallelism
• perversity
• polarization
• pole
• proportion
• proportionality
• regularity
• repugnance
• shapeliness
• showdown
• symmetricalness
• symmetry
• uniformity