Existential Concepts

noun a person's existence after death; the afterlife

• Many religions believe in the concept of a next world where the soul goes after death.
• I wonder if there's really a next world after we die.
• Do you think there's a party in the next world?
• His mind was always in the next world, dreaming of what could be.

adjective not able to be quenched or satisfied

• His unslakeable thirst for knowledge drove him to pursue multiple advanced degrees.
• She has an unslakeable craving for chocolate, no matter how much she eats.
• My unslakeable desire for adventure always gets me into trouble.
• The fire of his unslakeable ambition burned brightly within him, propelling him to success.

noun The quality or state of being vast; immense size or extent.

• The vastness of the ocean was truly awe-inspiring.
• I never realized the vastness of this forest until I got lost in it.
• The vastness of her shoe collection is insane!
• The vastness of his knowledge on the subject was evident in his detailed explanations.