**Appendix: Glossary of Celestial Terms**
1. **Eclipsed Dominion:** The mystical realm where shadows and light coexist, forming the cosmic backdrop for the adventures of Adrian Frost and the fellowship.
2. **Astral Amulet:** A celestial artifact forged in the Celestial Nexus, serving as a conduit to astral, ethereal, and celestial energies. It plays a central role in Adrian's journey.
3. **Shadow Sovereign:** Adrian Frost's initial title, representing his affinity with shadows. As his cosmic journey unfolds, he transcends this moniker to become the Celestial Sovereign.
4. **Fellowship:** The companions who accompany Adrian on his cosmic odyssey, each embodying unique cosmic principles and contributing to the harmony of the realms.
5. **Sentient Shadow:** A mysterious entity bound to Adrian, evolving into a cosmic guide and integral part of the celestial nexus.
6. **Astral Ascendancy:** The transformative process undertaken by Adrian and the fellowship, unlocking cosmic potentials and connecting mortal souls to the astral realms.
7. **Celestial Sovereign:** Adrian's title after attaining mastery over astral, ethereal, and celestial energies. He becomes a cosmic guardian guiding the realms.
8. **Celestial Nexus:** A mysterious realm at the heart of the Eclipsed Dominion where past, present, and future converge, revealing cosmic truths.
9. **Luminescent Veil:** A celestial phenomenon bridging light and shadow, where the delicate dance of cosmic energies creates a mesmerizing display.
10. **Ethereal Nexus:** A realm where the boundaries between imagination and reality blur, allowing cosmic travelers to shape ethereal realities.
11. **Cosmic Stewardship:** The responsibility bestowed upon Adrian and the fellowship to safeguard the delicate balance between realms within the Eclipsed Dominion.
12. **Cosmic Overture:** The concluding chapter of the tale, symbolizing the timeless echoes of Adrian's journey and the continuing cosmic symphony within the Eclipsed Dominion.
13. **Aionis:** The Celestial Nexus Guardian, a radiant figure embodying cosmic equilibrium and guiding Adrian and the fellowship within the Celestial Nexus.
14. **Ethrana:** The Weaver of Ephemera, a luminous figure within the Ethereal Nexus guiding cosmic artisans in shaping ethereal realities.
15. **Lysandra:** The Illuminatrix, a Luminarae within the Luminescent Veil, guiding the fellowship through trials that balance light and shadow.
16. **Acknowledgments:** A section expressing gratitude to readers, inspirations, and contributors to the cosmic tale.
17. **Author's Note:** A personal message from the cosmic guide and storyteller.
18. **Afterword:** Reflections on the completion of the cosmic saga and hopes for the enduring legacy of the Eclipsed Dominion.
19. **Appendix:** A glossary of celestial terms for reference and deeper understanding of the cosmic lore.
May this glossary serve as a celestial guide through the luminous realms of the Eclipsed Dominion.