female jew: Jüdin
male jew: Jude
Depending on how young the girl is you would be more informal with her. You address her with "du" and say "Hallo" instead of "Guten Tag".
Since in German young and boy have nearly the same meaning, you can just say "Junge" and already someone would know that it's a young boy with saying young.
For a boy, you would say "allemand" and for a girl, you would say "allemande" in French.
My girl - mein Mädchen.
"Girl" translates as "Mädchen" Madchen
My Little girl = Mein kleines Mädchen
weibisches Mädel
Pfadfinderinnen
Junger HundWelpe (puppy)
Girl is "chica" in Spanish. A very young girl would be "niña" (which is a baby girl). A young lady (unmarried) is a "señorita."
I love that girl = ich liebe das Mädchen
ein kleines Mädchen