title: What is the difference between executions and configurations in a maven plugin?
body: <p><a href="https://maven.apache.org/guides/mini/guide-configuring-plugins.html#Configuring_Build_Plugins" rel="noreferrer">I found this description</a> but it does not seem comprehensive.  Could someone explain in detail what is the difference between <code>executions</code> and <code>configurations</code> in a maven plugin?</p>