usage guide
noun1
Education, Human sciences, Linguistics, Sciences A book that explains how to use a standardised language correctly and in keeping with currently accepted style, usually through the explication of what are conservatively viewed as language "errors".
- There is also a gap between the general population and the falling-standards bemoaners, usage guide publishers, and language pundits, whether conservative or progressive.2014, James Lambert, “Diachronic stability in Indian English lexis”, in World Englishes, page 114: