title: What is the difference between Material and MaterialApp in Flutter?
body: <p>I am developing an app using Flutter. If I choose <code>MaterialApp</code> as the parent widget of my app, all <code>Text</code> widgets in my app are underlined yellow. On the other hand, if I just use <code>Material</code> as the parent widget, no yellow lines are shown under the <code>Text</code> widgets. </p>
  
  <p>What is the difference between <code>Material</code> and <code>MaterialApp</code>?</p>