Iman or Faith

One of The Five Pillars

Iman

"There is none worthy of worship except God and Muhammad is the messenger of God." This declaration of faith is called the Shahadah, a simple formula that all the faithful pronounce. Iman also has another name which is Faith and that means to believe or to trust somebody.

Faith

Just like Iman it goes on trust and belief they are similar and mean the same thing that is why they are on one of the five pillars of Islam.