The Prophet ( sallallaahu `alayhi wa sallam ( may Allaah exalt his mention )) said that Iman is, "To believe in Allah, His Angels, His Books, to believe in meeting Him, to believe in His Messengers, the Resurrection and the predestination." [Reported by Al-Bukhari, Muslim and others]
This is the meaning of Islam and Iman if they are mentioned in one context. However, if only one of them is mentioned, then each one encompasses the meaning of the other one. If the word Islam only is mentioned, it includes the meaning of Iman, and vice-versa.
By the definitions of Islam and Iman, we notice that Iman is about inwardly actions, and Islam is about outside acti