As opposed to Windsor? (4)
I believe the answer is:
eton
'windsor?' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see an association between them that I don't see?
'as opposed to' is the wordplay.
I cannot really see how this works, but
'to' is found in the answer.
The remaining letters 'en' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for eton that I've seen before include "Posh British public school" , "College, collar or crop" , "Berkshire public school" , "Town opposite Windsor on the Thames" , "Town on the Thames noted for its school" .)