I suppose you mean etymologically. The word one uses should in some way communicate what the subject or object represents. While it is impossible for any word or definition to capture what is beyond words, yet the word Divine etymologically derives from Sanskrit as well as later Latin roots dyau or dyaus or dei which means Shining, luminous, light etc and by implication the destroyer of darkness and negativity, obscurity, blindness etc. The word God has been corrupted by the use of certain religious conceptions that portray God in a certain fixed and limited, often portray Him even as a sort of monster. Hence the word Divine that is much closer to the Truth. Light is everywhere and in everything and darkness is only the limitation of our perception. But God of religions is often someone seated out there, up above, primarily a codifier or Law giver and a Judge who rewards and punishes. Humanity has largely evolved past this stage and is discarding this Semitic conception of God and opening more to the conception of Sanatana Dharma for which the word Divine corresponds most closely to the actual experience of what THAT is.
Psychologically of course the Divine is all that we aspire for, the perfection we seek, the progress we must make, the Love we are athirst for, the Bliss we never find, the Peace that is the stable basis of the multitudinous dance of creation, the Beauty and Harmony whose law we must discover, Power from which all other powers derive from, the highest we can conceive and strive for to become but are not yet so.
Spiritually it means the Source, the Origin, the Absolute, the Highest, the Ultimate Reality, Truth, the Core and essence and the circumference, the Infinite and Eternal, and many other things besides for which no words exist.
Affectionately,
Alok Da
