Student - Student = Breadwinner (6)
I believe the answer is:
earner
This could be a double definition.
'student student' is the first definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'breadwinner' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for earner that I've seen before include "way to make money" , "Something making a good profit (colloq.)" , "Worker with income" , "One receives wages in return for labour" , "Someone, or something, that provides income" .)