dichotomy
Refers to the division of a whole into two mutually exclusive parts or categories. Used in logic, philosophy, and general contexts.
善悪の二分法は単純すぎる。
The dichotomy of good and evil is too simplistic.
この問
It is dangerous to think about this problem in terms of a dichotomy.
Compound of 二 (two), 分 (divide), and 法 (method, law). The term is a direct translation of the Western concept of dichotomy.