occurrence or existence together or in connection with one another, coexistence
A concomitant.
The Roman Catholic doctrine of the existence of the entire body of Christ in the Eucharist, under each element, so that the body and blood are both received by communication in one kind only.
An incompatibility, as of two things that cannot be simultaneously fulfilled.
A clash or disagreement, often violent, between two or more opposing groups or individuals.
To overlap (with), as in a schedule.
To be at odds (with); to disagree or be incompatible