differenceWhat's the difference between the two cars?
distinctionThere's a clear distinction between the two countries' cultures.
contrastI like the contrast of those red shoes with your black suit.
discrepancyformalThere is some discrepancy between the two accounts.
chasmformalThere is a widening chasm between public health officials and popular opinion.
gapThe achievement gap between low-income students and high-income students is well-documented.
disparityformalThe disparities between the rich and the poor are only growing.