Is there a way to allocate a group to words or frases added manually

Hi Steve, I have just added a few words and frases to my word list. I did this directly, one at a time, rather than adding them from one of the texts in my library. I know I can star these words and then choose to have flash cards of just my starred words. But is there a way, or could there be a way, of adding these words to a group so I can choose just to focus on just these during a flash card session. In the same way that I can choose to just study saved words from any of the texts in my library. So it would be like associating these independently added words to sort of non existent text (if that makes sense). Thanks as always and I look forward to your thoughts.