S: (n) discrepancy, disagreement, divergence, variance (a difference between conflicting facts or claims or opinions) "a growing divergence of opinion"
S: (n) differentia (distinguishing characteristics (especially in different species of a genus))
S: (n) distinction (a distinguishing difference between similar things or people) "he learned the distinction between gold and lead"
S: (n) discrepancy, disagreement, divergence, variance (a difference between conflicting facts or claims or opinions) "a growing divergence of opinion"