A clash or disagreement, often violent, between two or more opposing groups or individuals.
An incompatibility, as of two things that cannot be simultaneously fulfilled.
To overlap (with), as in a schedule.
To be at odds (with); to disagree or be incompatible
A type of dialogue or argument where the participants do not have any reasonable goal. The aim is to argue for the sake of conflict, and often to see who can yell the loudest.
One who makes specious arguments; one who is disputatious.
Provoking strife, controversy or discord.