Is there a way to add just certain words from a list? Do I have to add those to a separate list and add from that list or can I just push certain words to the front of the queue?

You can Remix the list, study the remixed list instead, and then delete all the words you don't want to study from the remixed version of that list. That's probably the easiest way to do what you want if you want to get a bunch of words and also skip a bunch of words.

If you wanted to prioritize just a few words, you could select them from the list and use the "Add to List" action to get them into another list and just study that one.

If you wanted to skip just a few words, you could select them and ban them, then add the whole rest of the list.

Or do any combination of these things.