to happen again or repeatedly

बार-बार होना

English Usage: The same problem tends to recur every few months.

Hindi Usage: वही समस्या हर कुछ महीनों में बार-बार होती है।

the act of recurring or happening again

पुनरावृत्ति

English Usage: The recurrence of the disease was concerning for the doctors.

Hindi Usage: डॉक्टर्स के लिए बीमारी की पुनरावृत्ति चिंताजनक थी।