Noam Chomsky , in 'Aspects of the Theory of Syntax',
said that grammars of particular languages "are supplemented
by [an innate] universal grammar that accomodates the creative
aspect of language use and expresses the deep-seated regularities
which, being universal, are omitted from the [particular] grammar
itself". The universal aspects of "the linquistic intuition--the
tacit competence--of the native speaker" he called 'generative
grammar'.