noun
causal relationship; causality
Used in formal, academic, or logical contexts to describe a cause-and-effect connection between events or phenomena.
喫煙と肺がんの因果関係は科学的に証明されている。
The causal relationship between smoking and lung cancer has been scientifically proven.
この二つの出来事に因果関係は認められなかった。
No causal link was found between these two events.