ISLAM
Linguistically, Islam means submission. According to Islamic terminology, Islam means a specified submission. It is the submission to what the prophet brought.
This takes place by uttering the two testification of faith. Belief, on the other hand, linguistically means certitude.
According to Islamic terminology, it means a specified certitude. It is to accept as true what the prophet brought. The least of Belief is to belief in the THE TWO TESTIFICATIONS OF FAITH.
Islam and Belief cannot be disassociated. One of them is not accepted without the other, although their original meanings are not identical. Imam Abu Hanifah said in Al-Fiqh Al-'Akbar: "Islam is not acceptable without Belief and Belief is not accepted without Islam.
They are like the front of something and its back." Islam is the Religion of all the prophets.
ALLAH
Everything that exists, except Allah, the Creator, is created by Him. Allah has full power over every bit of His creation. Allah is not created; He existed always, having His attributes; He will never perish, nor will His attributes diminish. Among His attributes is that He has knowledge of all His creation, that He sees the seeable and that He hears the hearable, and His knowing, seeing and hearing are in no way similar to ours. Allah speaks and His Speech is not made up of language or sound, nor does it resemble the speech of man in any way. He does not need any of His creation for His existence and He does not resemble any of His creation in any way. This means that Allah is not a man or a woman; He is not "a Father" or "a Mother". He does not have a wife, a mother, a father, a son, or a daughter; He has no equal or partner. Allah does not divide into parts; no creation, including man, has "a part of Allah" in him, nor can any creation become like Allah. He is the only God.
Allah existed eternally before He created any place, such as Paradise (Heaven), the skies, earth, or any planets. Hence, we know He is now as He was before He created all these places; He does not need any place to exist in. Allah has always known about every bit of His creation; there is no thing in His creation which escapes or defeats Him. No thing goes against the Will of Allah. Both good and evil occur by His Will. However, Allah orders humans to do only the good; humans make the choice to obey or disobey Allah. Our ability to do good or evil is given to us by Allah, the Exalted.