W: (adj) different [Related to: difference] (unlike in nature or quality or form or degree) "took different approaches to the problem"; "came to a different conclusion"; "different parts of the country"; "on different sides of the issue"; "this meeting was different from the earlier one"
W: (v) differentiate [Related to: difference] (be a distinctive feature, attribute, or trait; sometimes in a very positive sense) "His modesty distinguishes him from his peers"
S: (n) dispute, difference, difference of opinion, conflict (a disagreement or argument about something important) "he had a dispute with his wife"; "there were irreconcilable differences"; "the familiar conflict between Republicans and Democrats"