Synset
(metaphysics) essential nature or underlying reality
<noun.cognition>
hypostasis
lexical pointers
derivationally related form
hypostatize
semantic pointers
hypernym
center, substance, core, essence, heart, sum, kernel, centre, gist, heart and soul, inwardness, marrow, meat, nub, pith, nitty-gritty
domain of synset (topic)
metaphysics