Prophet = Nabi = Bring new scripture

Messenger = Rasoul = Confirm existing scripture

[3:79] Never would a human being whom GOD blessed with the scripture and prophethood say to the people, "Idolize me beside GOD." Instead, (he would say), "Devote yourselves absolutely to your Lord alone," according to the scripture you preach and the teachings you learn.

[2:101] Now that a messenger from GOD has come to them,* and even though he proves and confirms their own scripture, some followers of the scripture (Jews, Christians, and Muslims) disregard GOD's scripture behind their backs, as if they never had any scripture.

[3:81] GOD took a covenant from the prophets, saying, "I will give you the scripture and wisdom. Afterwards, a messenger will come to confirm all existing scriptures. You shall believe in him and support him." He said, "Do you agree with this, and pledge to fulfill this covenant?" They said, "We agree." He said, "You have thus borne witness, and I bear witness along with you."