Abstract
Abstraction
noun
Pluck a phenomenon out at random. It doesn't make sense. You can't physically pluck out a phenomenon! The reason is abstract.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼女のレビューは何だか抽象的だったので、あまりよく分かりませんでした。
Her review was kind of abstract, so I didn’t really understand it.