* Κορίτσι (korítsi): This is the most common and widely understood word for "girl," generally used for girls and young women.
* Κοπελιά (kopelia): This word is more informal and often implies a younger girl, sometimes with a slightly playful or affectionate connotation.
* Παρθένος (parthénos): This word means "virgin" and was used in ancient Greek to refer to a young unmarried woman. It's rarely used in modern Greek in everyday conversation unless referring specifically to virginity.
Therefore, κορίτσι (korítsi) is the safest and most versatile option for most situations.