manifest + -ation

source: Heart Attack GIF - Find & Share on GIPHY

an event, action, or object that clearly shows or embodies something, especially a theory or an abstract idea:

(ある状況･感情の)現れ, しるし; 明示, 表明

e.g. the first obvious manifestations of global warming.

the action or fact of showing an abstract idea:

e.g. the manifestation of anxiety over the upcoming exams.

a symptom or sign of an ailment:

e.g. a characteristic manifestation of Lyme disease.

a version or incarnation of something or someone:

e.g. Purity and Innocence and Young Love in all their gentle manifestations.

an appearance of a ghost or spirit.

(霊の)出現

late Middle English: from late Latin manifestatio(n-), from the verb manifestare ‘make public’.