Facilities
type: Concept
preferred label: تسهیلات @fa
related: Maintenance

Machinery
type: Concept
preferred label: ماشین‌آلات @fa
related: Maintenance

Language Maintenance
type: Concept
broader: Maintenance
preferred label: حفظ زبان @fa

Preservation
type: Concept
broader: Maintenance
preferred label: نگاهداری @fa

Maintenance
type: Concept
narrower: Preservation
narrower: Language Maintenance
preferred label: تعمیر و نگهداری @fa
related: Property
related: Facilities
related: Machinery
related: Obsolescence

Property
type: Concept
preferred label: دارایی @fa
related: Maintenance

Obsolescence
type: Concept
preferred label: کهنگی @fa
related: Maintenance