Usage patterns
〈場所〉は危険だ〈place〉 is dangerous
This road becomes dangerous at night.
〈事〉に危険が伴う〈an activity〉 involves risk
This job always involves danger.
危険な〈物〉a dangerous 〈thing〉
There are many dangerous machines in the factory.
〈事〉の危険があるthere is a risk of 〈something〉
There is a risk of flooding because of the typhoon.
危険を感じるto sense danger
She sensed danger in the atmosphere of the place.
Expressions
身の危険danger to oneself; personal danger; threat to one's safety 危険極まるextremely dangerous; perilous in the extreme 危険にさらすexpose to danger; imperil; jeopardize