What is the difference between IoT and IIoT?

<table align="left" border="1" cellpadding="0.5" cellspacing="0" style="border-collapse:collapse; height:380px; margin-top:5px; width:100%"> <thead> <tr> <th scope="col"><span style="color:#ffffff">No.</span></th> <th scope="col"><span style="color:#ffffff">Iot</span></th> <th scope="col"><span style="color:#ffffff">IIot</span></th> </tr> </thead> <tbody> <tr> <td>1</td> <td>Stands for Internet of Things</td> <td>Stands for Industrial Internet of Things</td> </tr> <tr> <td>2</td> <td>A service model is human-centric.</td> <td>A service model is machine-centric.</td> </tr> <tr> <td>3</td> <td> <p>It support customer-oriented applications.</p> </td> <td>It supports industry-oriented applications.</td> </tr> <tr> <td>4</td> <td>Communication transportation is done through wireless devices.</td> <td>Communication transportation is done through both wired and wireless devices.</td> </tr> <tr> <td>5</td> <td>The quality of data is medium to high.</td> <td>The quality of data is high to very high.</td> </tr> <tr> <td>6</td> <td>Criticality is not severe</td> <td>Criticality is severe</td> </tr> </tbody> </table>