This summary is not the rule. The rule text controls.
Nevada used to have different types of lawsuits with different names and procedures, depending on what kind of legal problem you had. This rule gets rid of all those separate categories. Now, no matter what your case is about, it's just called a "civil action" and follows the same basic process.
This matters because it makes things simpler for everyone. You don't have to worry about picking the "right" type of lawsuit or using old-fashioned legal labels. If you have a legal dispute, you file a civil action, and the court handles it under one consistent set of rules.