ideation, n.All

Ideation (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠necessarily spontaneous — you must busy yourself to see an essence — whereas a sensory thing can appear to you while you are not busied with it at all.