Combine or Merge Forms

Is there a way where I can take two separate, previously created forms, and merge them into one form?  

Hi, thank you for reaching out to us.

Yes, that is possible by using the Field Manage app. This tool allows you to clone fields from one form to another.
Here is a link to the app:
https://www.jotform.com/integrations/field-manager  

I hope this will help. Let us know if you have further questions.