How to make the selection in a radio field appear in another field

I am trying to build a form where there is a field of radio buttons and underneath that field is another field (it could be any field that will work for this). The field underneath would show the contents of the selected Radio button. For example – somebody selects #3 from the list of radio buttons which says “Lounges”, then the field underneath would show the word “Lounges”.

I thought about using conditional logic and setting different fields to appear for each Radio Button – but there are going to be a lot of options in the Radio field and they will be changing from time to time, so I don’t want to do that.

I reviewed the Dynamic Population documentation but it seems I need to go a bit further than that. Could someone provide some guidance as to how I can achieve what I am looking to do?