title: Difference between Abstract factory and builder?
body: <p>Sorry for asking again. I have searched over web but couldn't understand hence i have to put here. Here what I research by my self. I studied from head first design pattern.</p>
  <p><strong>Abstract factory pattern :</strong></p>
  <p><img src="https://i.stack.imgur.com/JLmTR.jpg" alt="" /></p>
  <p>As per the differences i studied that builder some senses it is a Factory, but
  it only creates one type, most of the time.<br />
  So can i say NYStore in above image is builder as it returns pizza object to client?
  am i correct? Please give your answer on bases of above example which may help me to learn it.</p>