What's the difference between your iPhone's Do Not Disturb and Focus modes?

Your iPhone's Focus modes, including Do Not Disturb, are a great way to reduce interruptions. But what's the difference in how they work?

Your iPhone&#39;s Focus modes, including Do Not Disturb, are a great way to reduce interruptions. But what&#39;s the difference in how they work? <p><img src="https://www.engadget.com/img/gallery/whats-the-difference-between-your-iphones-do-not-disturb-and-focus-modes/intro-1788382014.jpg" /></p>