material fact; material information
Legal term referring to a fact that could influence a decision, such as in a contract, trial, or disclosure. Used in formal legal contexts.
All material facts must be stated in the contract.
A material fact came to light during the trial.
事実 means 'fact' in general, while 重要事実 specifically refers to a fact that is legally significant or decisive.
重要事項 is a broader term for 'important matter' or 'important item', not limited to factual information and used in various formal contexts.
Compound of 重要 (important) and 事実 (fact). The term is a direct translation of the English legal concept 'material fact'.