Death: Is it all perception?

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Across
  1. 2. Enclosed subterranean chamber consecrated to the interment of the dead
  2. 3. The indeterminate nature of mortality that engenders awe and trepidation
  3. 6. Self-perpetuating cycle in which birth and dissolution coalesce
  4. 8. Temporal vessel encasing the essence of being
  5. 11. Designated term for the pathological dread of death
  6. 12. Sepulcher marking the cessation of mortal toil; also denotes solemn gravity
  7. 13. Transitional corridor from one plane of existence to another
  8. 15. Metamorphic process by which cessation yields a renewed form
  9. 17. Equanimity that may herald the final relinquishment of existence
  10. 18. Ritualized observance commemorating the transition from presence to memory
  11. 20. Substratum that receives the corporeal remnants of life
  12. 21. Process wherein cessation begets renewal, an emblem of transformation
  13. 22. Territory where genesis and cessation of life converge
  14. 23. Profound affective response to the departure of one beloved
Down
  1. 1. Philosophical belief in the transference of the soul to a renewed corporeal form
  2. 4. Assent to truths or powers imperceptible to the empirical senses
  3. 5. Moral fortitude summoned when confronting the inexorability of death
  4. 6. Nocturnal interval, long symbolizing cessation and twilight
  5. 7. Absolute stillness, suggesting serenity or the final cessation of toil
  6. 9. Innate apprehension elicited by the inexorability of mortality
  7. 10. State of repose often invoked as a metaphor for life’s terminus
  8. 14. Doctrinal notion that consciousness persists subsequent to corporeal demise
  9. 16. Mythic personification of mortality, harvesting lives with inevitability
  10. 18. Season emblematic of decline, senescence, and the ephemerality of life
  11. 19. Celestial abode envisioned as recompense for virtue beyond the mortal coil