Microsoft Dynamics 365 versus Power Apps! What’s the difference?

What is the difference between Microsoft Dynamics 365 and PowerApps? Are they the same thing? Is PowerApps different form Dynamics 365 CRM? What is common between PowerApps and Dynamics CRM or Dynamics 365 Customer Engagement?

I did a webinar on the 10th Mary 2019 where I tried to answer all these questions and I have also covered few more related points. Watch the video here or on my YouTube Channel