* Friendship: The twins were inseparable, always sharing secrets and adventures.
* Love: Their love for each other was inseparable, a bond forged in shared dreams and experiences.
* Nature: The river and the forest were inseparable, one nourishing the other in a delicate ecological balance.
* Art: The artist's style and subject matter were inseparable, each element complementing the other to create a unified vision.
* Metaphor: Her joy and her sorrow were inseparable, each emotion coloring the other in a complex tapestry of human experience.
Let me know if you'd like more examples or have a specific context in mind!