To expound on the meaning of grammar:

GRAMMAR — (Answers the question of the Who, What, Where, and the When of a subject.)

Discovering and ordering facts of reality comprises basic, systematic Knowledge- not only the rules developed and applied to the ordering of word/concepts for verbal expression and communication, but our first contact with conscious order as such. This is the initial, self-conscious technique used in properly (discursively or sequentially) organizing a body of knowledge from raw, factual data for the purpose of gaining understanding (through logic) and; thus, also organizing the individual human mind. It is the foundation upon which all other “methods of organization and order” are built.

Special grammar properly relates words to other words within a specified language like English, Russian, or Latin.

General grammar relates words to objective reality in any language and applies to all subjects as the first set of building blocks to integrated or fully mindful, objective knowledge. A body of knowledge which has been gathered and arranged under the rules of general grammar can now be subjected to logic for full understanding, which, emphatically, is a separate intellectual procedure.

http://www.triviumeducation.com/grammar/