An error; a blunder.
A pitch which was intended to be pitched in a hard-to-hit location, but instead ends up in an easy-to-hit place.
To understand wrongly, taking one thing or person for another.
A trouble of any kind.
Striving; earnest endeavor; hard work.
Bitter conflict, sometimes violent.
Exertion or contention for superiority, either by physical or intellectual means.