What is PDF Form and PDF document?

I'm wanting some clarity on the question of how many PDF forms I could create in my account, as the Q and A says I could have only one PDF form and lots of PDF documents. What does this mean?

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The PDF form is a Fillable PDF and yes, you can only create one PDF form/Fillable PDF in each web form/Jotform. However, the PDF document is a copy of submissions as PDF. You can create multiple PDF document templates in your PDF Editor and choose which template you would like to include in the email or which template you would like to use for download.

You can go to your form PDF-Edit or and test the difference between PDF document and PDF form.