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shapeshifting (of an animal or spirit); goblin; ghost; apparition; bugbear
incarnation
transformation
「変化」 has another reading with different meanings.
季節の変化を楽しむのが好きだ。
I like enjoying the change of seasons.
その僧は観音菩薩の変化として民を救うために現れたと伝えられている。
It is said that the monk appeared as an incarnation of Bodhisattva Kannon to save the people.
この十年で大きな変化があったね。
There's been a big change in the last ten years.