Main feature of German city church (7)
I believe the answer is:
essence
'main feature' is the definition.
The definition and answer can be both related to thinking as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'german city church' is the wordplay.
'german city' becomes 'essen' (city in Germany).
'church' becomes 'CE' (abbreviation for Church of England).
'essen'+'ce'='ESSENCE'
'of' is the link.
Can you help me to learn more?
(Other definitions for essence that I've seen before include "one of 21 [HEARTS]" , "Intrinsic character" , "The heart of" , "Core, most vital part" , "Flavour, spirit" .)