Definitions of conflict:

• noun:   an open clash between two opposing groups (or individuals)

  Example: "The harder the conflict the more glorious the triumph--Thomas Paine"

• noun:   an incompatibility of dates or events

  Example: "He noticed a conflict in the dates of the two meetings"

• noun:   opposition between two simultaneous but incompatible feelings

  Example: "He was immobilized by conflict and indecision"

• noun:   opposition in a work of drama or fiction between characters or forces (especially an opposition that motivates the development of the plot)

  Example: "This form of conflict is essential to Mann's writing"

• noun:   a state of opposition between persons or ideas or interests

  Example: "His conflict of interest made him ineligible for the post"

• noun:   a hostile meeting of opposing military forces in the course of a war
• noun:   a disagreement or argument about something important

  Example: "The familiar conflict between Republicans and Democrats"

• verb:   go against, as of rules and laws

  Example: "This behavior conflicts with our rules"

• verb:   be in conflict

  Example: "The two proposals conflict!"