variation, variant, divergence, variability, division, discrepancy, disagreement, deviation, covariance, heterogeneity, more...

uniformity, consistency, similarity, agreement, conformity

homoscedastic, heteroscedastic, autocorrelation, serial correlation, spatial correlation, more...

total, genetic, common, residual, constant, large, wide, considerable, high, true, minimum

amount of variation,   difference in,   different results,   square of the data