Comment on page
Content blocks

And for content inside Page sections, we have a second type of blocks we call Content blocks. The blocks inside Content blocks are:
Text blocks
Heading
Text
List
Quote
Button
Intro
Info
Accordion
Table
Code blocks
Code
Markdown
Media
Banner
Image
Gallery
Video
Misc
Contact form (Only one block per page allowed)
Every Content block has additional options.
Also, Content blocks are used on almost every place you add content, on some pages without Page Builder or in the header and footer.