Noun difference; alternative
Synonyms: aberration, abnormality, adaptation, alteration, bend, break, change, contradistinction, contrast, curve, deflection, departure, departure from the norm, deviation, digression, discrepancy, disparity, displacement, dissimilarity, dissimilitude, distinction, divergence, diversification, diversity, exception, fluctuation, inequality, innovation, modification, mutation, novelty, shift, swerve, turn, unconformity, variety
Antonyms: agreement, root, similarity, source