blades
type: Concept
preferred label: تیغه @fa
related: sharpening

cutters
type: Concept
preferred label: برنده @fa
related: sharpening

knives
type: Concept
preferred label: کاردک @fa
related: sharpening

sharpening
type: Concept
broader: servicing
preferred label: تیز کردن @fa
related: knives
related: blades
related: cutters

servicing
type: Concept
narrower: sharpening
preferred label: خدمات @fa