What is Meta Box?
📄️ Custom post types
When building a website, there may be sections on the website such as events and projects where the content and appearance are very different from posts and pages. That's when you need custom post types.
📄️ Custom fields
After creating custom post types and custom taxonomies, you'll need to add more details to your posts. For example, you'll need "date" and "location" for the "event" post type. Such details are called custom fields and that's the main thing that Meta Box does for you.