Substantive :  adj
1: being the essence or essential element of a thing; "substantial equivalents"; "substantive information" [syn: substantial, in essence]
2: applying to essential legal principles and rules of right; "substantive law" [syn: essential] [ant: adjective]
3: having substance and prompting thought; "a meaty discussion" [syn: meaty] (noun)

1: a noun or a pronoun that is used in place of a noun

ab ovo, abstract noun, adherent noun, adjectival, adverbial, appreciable, attributive, basal, basic, bedrock, central, collective noun, common noun, concrete, conjunctive, constituent, constitutive, copulative, correct, elemental, elementary, essential, focal, formal, functional, fundamental, gerund, glossematic, grammatic, gut, hypostasis, indispensable, intransitive, life-and-death, life-or-death, linking, material, nominal, noun, noun phrase, of the essence, of vital importance, original, palpable, participial, ponderable, postpositional, prepositional, primal, primary, primitive, pronominal, pronoun, proper noun, quotation noun, radical, real, sensible, solid, structural, substantial, syntactic, tagmemic, tangible, transitive, underlying, verbal, vital,