Succumb to overwork, as analysts do (9)
I believe the answer is:
breakdown
'do' is the definition.
The answer and definition can be both related to natural events as well as being singular nouns.
Perhaps there's an association between them I don't understand?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for breakdown that I've seen before include "Mechanical failure" , "Detailed analysis" , "Analysis < of separation" , "Problem with car" , "psychological crisis" .)