Difference between `object` type and `document` type in Sanity.io.

What's the difference between

object

type and

document

type

https://www.sanity.io/docs/object-type
By default, object types cannot be represented as standalone documents in the data store. To define an object type to represent it as a document with an ID, revision, as well as created and updated timestamps, you should define with the

document

type. Apart from these additional fields, there’s no semantic difference between a document and an object.

Objects does not appear in the Content area of the sidebar, but document type does.

Hi! Trying to understand this too. What is the use of Objects in schemas if they cant be represented in the data store?