vocabularies

The form of a grater that shares one slot-profile (a grating surface keyed by grating_grade) and differs only by shape/format: box (a four-sided standing box grater), flat (a flat handheld grater/paddle), handheld (a small handheld grater), rotary-drum (a crank drum grater), zester (a fine microplane zester). A growing vocabulary (L13). These are values, not classes — they add no exclusive slot over Grater.

Answers the question: grater type.