Definition of difference:
the quality of being unlike or dissimilar; "there are many differences between jazz and rock"
a variation that deviates from the standard or norm; "the deviation from the mean"
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"
a significant change; "the difference in her is amazing"; "his support made a real difference"
the number that remains after subtraction; the number that when added to the subtrahend gives the minuend