The best way to differentiate between Jews and gentiles is to look at their cultural, traditional, and religious differences. Jews are usually referred to as descendants of the patriarch Israel. The religion practiced by Jews is called Judaism, and it is based majorly on the law of Moses.
Gentiles, on the other hand, are non-Jewish people who believe and worship God using the patriarchal system. Although Jews and gentiles have certain records of Jesus Christ, the Jews do not see Jesus as God but a messenger of God, while the gentiles still believe and regard Jesus as God.
In fact, the Jews believe God is going to send a Messiah who will bring everybody to the kingdom of God. According to history, the word gentile is related to Latin, while the word Jew has Hebrew roots. Another difference is that the Jews do not completely believe in everything the gentiles believe in, whereas the gentiles still follow everything that the Jews believe.