Another word for contrast could be difference, disparity, dissimilarity, distinction, dissimilitude, differentiation, divergence, opposition, unlikeness, contradiction, contradistinction, variance, variation, comparison, disagreement, discrepancy, disparateness, distance, distinctiveness, distinctness, diverseness, diversity, foil, incongruity, otherness, contrariety, polarity, adverse, contraposition, converse, gap, heterogeneity, incompatibility, incongruousness, inconsistency, inequality, inverse, oppositeness, and reverse.
I hope this helps! Have a great day!
