1.
usage, directions for use
The way something is used, or instructions on how to use something. Applied to both medicine/products (dosage and directions) and language (grammatical usage).
Usage
Most commonly encountered in two contexts: (1) medical/product instructions, almost always in the fixed phrase 用法・用量 (dosage and directions), and (2) linguistics/grammar, referring to how a word or expression is used. The medical usage is extremely common on medicine packaging and in pharmacy instructions.
Common collocations
Related Words
Compare:
語法 (diction)