#permanence__permanency  the property of being able to exist for an indefinite duration
  exclusion:  impermanence
  supertype:  duration.temporal_property__length  continuance in time; "the ceremony was of short duration"; "he complained about the length of time required"
  subtype:  perpetuity  the property of being perpetual (seemingly ceaseless)
  subtype:  lastingness__lastingnes__enduringness__strength  permanence by virtue of the power to resist stress or force; "they advertised the durability of their products"
     subtype:  tensile_strength__tensilestrength  the strength of material expressed as the greatest longitudinal stress it can bear without tearing apart
     subtype:  indestructibility  the strength to resist destruction
     subtype:  persistence  the property of a continuous and connected period of time
     subtype:  changelessness  the property of remaining unchanged
     subtype:  everlastingness__everlastingnes  the property of lasting forever
  subtype:  imperishability__imperishingness__imperishingnes  the property of being resistant to decay; "he advertised the imperishability of the product"
  subtype:  perdurability  the property of being extremely durable
  subtype:  immortality  the quality or state of being immortal

No statement uses or specializes permanence; click here to add one.