incorporeality (n.)

• airiness
• fineness
• flimsiness
• ghostliness
• immateriality
• impalpability
• insubstantiality
• intangibility
• mistiness
• occultism
• otherworldliness
• rareness
• rarity
• shadowiness
• slightness
• spirituality
• subtlety
• supernaturalism
• tenuity
• thinness
• unreality
• vagueness