hypostasis (n.)
- air
- atom
- axiom
- center
- component
- constituent
- core
- earth
- element
- elixir
- essence
- essential
- fire
- flower
- focus
- fundamental
- gerund
- gist
- heart
- hyle
- kernel
- marrow
- material
- materiality
- matter
- meat
- molecule
- monad
- nature
- nominal
- noun
- nub
- nucleus
- pith
- plenum
- postulate
- principle
- pronoun
- quid
- quiddity
- quintessence
- sap
- soul
- spirit
- stuff
- substance
- substantive
- substratum
- water