Differnce between Archive and "Only New Pages"

I have trouble distinguishing between the following two functions:

Let’s assume I have already performed a search and now want to get new results only.

In a Search Set, I have the option to filter “Archived Pages” under “General”.

In addition, I can limit the results of any new search to “Only new pages”.

Can anyone explain what the difference will be when I view my results?

Thanks for the feedback

The “Only New Pages” option doesn’t require the archive and is specific for each search set.

Thank you

So it means that each search set, once a search has been performed, has a type of “internal memory”/“archive” separate from the archive in which all results are saved?

The search sets use only URLs and checksums contrary to the archive.