conflict

nouns

an open clash between two opposing groups (or individuals)
"the harder the conflict the more glorious the triumph"--Thomas Paine; "police tried to control the battle between the pro- and anti-abortion mobs"
opposition between two simultaneous but incompatible feelings
"he was immobilized by conflict and indecision"
is a type of (narrower)
mixed feelings or emotions
a hostile meeting of opposing military forces in the course of a war
"Grant won a decisive victory in the battle of Chickamauga"; "he lost his romantic ideas about war when he got into a real engagement"
a state of opposition between persons or ideas or interests
"his conflict of interest made him ineligible for the post"; "a conflict of loyalties"
is a type of (narrower)
the way something is with respect to its main attributes
"the current state of knowledge"; "his state of health"; "in a weak financial state"
an incompatibility of dates or events
"he noticed a conflict in the dates of the two meetings"
is a type of (narrower)
the quality of being unable to exist or work in congenial combination
opposition in a work of drama or fiction between characters or forces (especially an opposition that motivates the development of the plot)
"this form of conflict is essential to Mann's writing"
is a type of (narrower)
the relation between opposed entities
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"

verbs

be in conflict
"The two proposals conflict!"
is a type of (narrower)
to show differences when compared; be different
"the students contrast considerably in their artistic abilities"
go against, as of rules and laws
"He ran afoul of the law"; "This behavior conflicts with our rules"