Allah & ilah
The term Allah and ilah must be inferred in the context of our psyche (nafs / inner self) which is the actual theme of the entire book Quran. The subject of the book Quran is not about rules of nature or the absolute laws of physics, chemistry or the society.
The word ilah linguistically signifies something which we devotedly serve, worship and adore but sadly without understanding. The element or the activity that captivates or allures us is our ilah (god). Ego can be our ilah, greed can be an ilah and fear can be our ilah too. A God / god is an ilah of the religionists because their god is based on greed, reverence, fear and blind faith.
One thing must be very clear that Quranic Allah is not like a traditional God / god / ilah. The Quranic Allah does not require our worship, praise, adoration or our captivation. The term Allah is made with the combination of two words laam (ل) represents the word FOR and hu (ه) represents the word HIM - لَهُ - lahu (له), please refer 112:4 for understanding له (lahu). When definite article Al ال is attached to lahu له it becomes Allah (اللَّهُ).
The term Allah اللَّهُ is not a capital of ilah إِلَٰهٌ as popularly inferred. There cannot be big god and small god in Islamic philosophy. I strongly believe that the term Allah is a combination of a definite article plus preposition and pronoun; it is not a single word. The term Allah / allah is represented in the book Quran as masculine pronoun هُوَ - huwa - He - In Arabic grammar pronouns are called zameer (ضمير). And zameer means conscience, a voice that speaks, judges, it is a voice of our heart or conscience.
Definition of Allah through Surah Ikhlas
In 112:1 - Say Huwa is Allah ahadun - the essence of this verse is He / It can be anybody's conscience or anyone's conscience is Allah. Here the word هُوَ represents conscience.
The essence of verse 112:2 is that Voice of Conscience is Samad (Independent).
112:3 The Voice / Allah / Energy neither creates / produces / gives birth / begets nor is born / begotten.
The last verse 112:4 - And nor there is for it / Him any comparison / equivalent.
The entire subject of the book Quran is inner self or conscience. The main subject of the book Quran is conscience of mankind and how the inner voices effects upon the thinking process and behaviour of individuals. The entire life and death of human being is product of his / her own thought process.
The book Quran only instructs us that we give our sincere attention to observation, learn and seek knowledge in order to recognise and understand the cause, the source or the energy that effect us. The quality of our conscience drives us. A fake source or tempting energy is Satan and the factual or original source is Allah according to my humble understanding of the book Quran.
The book Quran has nothing to do with Imaginary Heavenly God but it is a book about our own strength and weakness. God is the Balancer of Human mind that we all must strive to keep sound and stable. An unstable or an unsound God is Satan. The entire message of the book Quran is to understand the God and it's Kingdom inside us and not outside. There are no two powers inside us, Satan and Allah are two sides of the same coin. Good and Evil are not two different powers or energies but two extreme part of the same scale. We become what we feed.
Our evolutionary journey is from small alphabet g to the capital alphabet G of God. We the small g is never separate from the big G, they are units of the same scale and have a strong connection with IT. The book Quran refers to Allah with capital A and allah with small a too, just like a drop 💧 and Ocean 🌊, they are not separate but One and the Same.