title: What's the difference between the maven-dependency-plugin and dependencyManagement
body: <p>I am confused about the difference between the <code>artifactItem</code> defined in  <code>maven-dependency-plugin</code> and the <code>dependency</code> defined in <code>dependencyManagement</code>/<code>dependencies</code> in maven.</p>
  <p>My real question is why do you put <code>artifactItem</code> in <code>maven-dependency-plugin</code> -&gt; <code>configuration</code>-&gt;<code>artifactItems</code> while you can put the <code>dependency</code> under <code>dependencyManagement</code>/<code>dependencies</code>?</p>
  <p>Is it because that you can specify copy/pack the dependency to a specified folder using maven-dependency-plugin? If so, does it means that maven-dependency-plugin is a superset of dependencyManagement? If true, why bother to have dependencyManagement?</p>
  <p>To make it simple, let's not consider multiple projects. Let's assume that there is only one project and one pom, it doesn't have any child project.</p>