* "The neighbors had a heated quarrel over the shared fence." (This uses "quarrel" to refer to the argument itself.)
* "The friends tried to avoid discussing the quarrel that had caused a rift between them." (This uses "quarrel" to refer to the specific disagreement or conflict.)
* "After the quarrel, they were both too proud to apologize." (This uses "quarrel" to refer to the event of the disagreement.)