In English, the word girl is used for children but also teenagers and young women (let's say 20-25).
In Spanish, I learned that the word niña is only used for kids, I might guess something like up to the age of ten.
How should I use the word knabino? Only for children, or for young women too?
Also, if I can't use knabino for young women, what should I call them?
(Same goes for knabo, but I don't think the English boy is as widely used as girl.)