What is the difference between Judaism and islam?

This question is comparing Apples to Oranges. Judaism is a religion while Islamism is a political philosophy.

Judaism is the religion, philosophy and way of life of the Jewish people. It is a monotheistic religion, with the Torah as its foundational text (part of the larger text known as the Tanakh or Hebrew Bible), and supplemental oral tradition represented by later texts such as the Mishnah and the Talmud. Judaism is considered by religious Jews to be the expression of the covenantal relationship God established with the Children of Israel.

Islam is a religion. Islamism, however, is something else. It is a political ideology whose goal is to bring the religious tenets of Islam into the daily functioning of a government and its laws. Islamism is a modern movement whose roots began contemporaneously with the rise of Salafism in the late 1800s and early 1900s in Egypt. Islamism is not by nature violent or expansive. Many Islamist movements have concrete nationalistic goals such as the Islamists in power in Turkey.