River in remote Denmark, southwest from Sweden (4)
I believe the answer is:
eden
'river in remote denmark' is the definition.
The answer and definition can be both locations as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'southwest from sweden' is the wordplay.
'southwest' becomes 'SW' (synonyms).
'from' suggests deleting specific letters.
'sweden' with 'sw' taken out is 'EDEN'.
Can you help me to learn more?
(Other definitions for eden that I've seen before include "PM, 1955-57" , "Old PM" , "Perfect place" , "Paradisal garden" , "Tory Prime Minister, 1955-57" .)