pass or fail; result (of an exam/selection)
Refers to the outcome of a test, screening, or application: whether one passed or failed. Often used in formal contexts such as entrance exams, job applications, and certifications.
The exam results will be announced next week.
I haven't received the pass/fail notification yet.
The exam results will be decided next week.
The interviewer makes the final judgment on pass or fail.
The university notifies applicants of the results by mail.
I'll find out tomorrow whether I passed or failed.
成否 means success or failure in a broad sense (of a plan, project, etc.), while 合否 is used specifically for exam or application results.
合格 means only 'passing' (success), whereas 合否 covers both the possibility of passing and failing.
合否 is used specifically for pass/fail results of exams or screenings, while 成否 is the broader term for success or failure of any endeavor.
Compound of 合 (match, fit) and 否 (no, not), literally 'fit or not', referring to whether one meets the standard.