What is the difference between the features "send uploads as attachments" and "pdf attachment"?

what is the difference between the features "send uploads as attachments" and "pdf attachment"?

Send uploads as attachments feature allow to send the uploaded files on the form as an attachment to your notification. This works only if you have file upload field on your form. Please see the blog post that announcing this feature.

https://www.jotform.com/blog/223-New-Feature-Get-Uploaded-Files-as-Email-Attachments

PDF attachment is the feature that sends the form filled information as a copy in the PDF format and attached to the notification email. 

Hope this information helps! If you have any other questions, please let us know. We will be happy to help.