phrase structure, sentence structure, agreement, composition, morphosyntax, synthesis, syntaxis, componence, regimen, conjunctional phrase, more...

semantics, content, meaning, message, significance

english, abstract, logical, basic, general, correct, formal, concrete, simple, complex, standard

grammar topic,   rule or regex,   parts of a code,   order of words,   one kind of code,   parser's concern,   grammar concern,   analyzed grammar,   language features,   grammar rules