To be at odds (with); to disagree or be incompatible
To overlap (with), as in a schedule.
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 compete vigorously, to quarrel, or to fight physically.
To create one or more variations of the usual way in which something is done.
To engage with people, relate to people.