No, Aramaic is a West Semitic language similar to Hebrew, spoken by the Jews in the era of Jesus. You find it in the New Testament when Jesus says "Father why have you forsaken me". And again when he tells the little dead girl to arise.
If "greek" stands for the language spoken, then it's: Ελληνικά (pronounced Ellinika) If "greek" stands for nationality, then it's: Έλληνας (pronounced Ellinas)