The rules or patterns governing how words and phrases are arranged and used in a language; syntax/grammar and usage.
日本語の語法は英語と比べて語順が違う点が多い。
Japanese syntax differs from English in many ways, such as word order.
辞書にはその単語の語法や使い方が詳しく載っている。
The dictionary lists that word's usage and syntax in detail.
この表現は語法的に正しくないので書き直してください。
This expression is syntactically incorrect, so please rewrite it.