Breakdown
Failure
Synonyms: Malfunction, seizing up, conking out, failure, and crash.
Collapse
Crack-up
Synonyms: Nervous breakdown, crack-up, (mental) collapse, and breakdown.
Example Sentences
The car experienced a sudden breakdown.
She had an emotional breakdown yesterday.
The report showed a complete breakdown.
He caused a breakdown in communication.
The machine suffered a serious breakdown.