Substitute outstanding artwork (6)
I believe the answer is:
relief
This clue might be a double definition.
'substitute' is the first definition.
(synonyms)
'outstanding artwork' is the second definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
Can you help me to learn more?
(Other definitions for relief that I've seen before include "That's a load off my mind" , "Cosmos" , "Lightening of a burden" , "Lightening of oppression" , "Easement or assuagement" .)
