Syntax

noun the whole system and structure of a language or of languages in general, usually taken as consisting of syntax and morphology (including inflections) and sometimes also phonology and semantics

• It is important to have a strong grasp of grammar in order to communicate effectively.
• I need to brush up on my grammar before the big presentation.
• Her grammar game is on point.
• Good grammar is the foundation of clear communication.

noun a person who studies or is an expert in grammar

adjective relating to or conforming to the rules of grammar

• The grammatic structure of the sentence was flawless.
• She always pays attention to grammatic errors in her writing.
• I can't stand it when people mess up their grammatic.
• The grammatic of the situation was so twisted, it was hard to follow.