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
Strife, contention, great effort.
A contortion of the body in an attempt to escape or to perform a difficult task.
To strive, to labour in difficulty, to fight (for or against), to contend.
To strive, or to make efforts, with a twisting, or with contortions of the body.