Bitter conflict, sometimes violent.
A trouble of any kind.
Striving; earnest endeavor; hard work.
Exertion or contention for superiority, either by physical or intellectual means.
A dispute between two parties, particularly an entrenched, back-and-forth dispute.
A game or competition in which two teams pull or tug on opposite ends of a rope trying to force the other team over the line which initially marked the middle between the two teams.