dis·par·i·ty 
(dĭ-spărĭ-tē)
(dĭ-spărĭ-tē)n. pl. dis·par·i·ties
1. The condition or fact of being unequal, as in age, rank, or degree; difference: "narrow the economic disparities among regions and industries" (Courtenay Slater).
2. Unlikeness; incongruity.
[French disparité, from Old French desparite, from Late Latin disparitās : Latin dis-, dis- + Late Latin paritās, equality; see PARITY1.]