Green cat set out to get mole (6,5)
I believe the answer is:
secret agent
'mole' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'green cat set out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'green'+'cat'+'set'='greencatset'
'greencatset' with letters rearranged gives 'SECRET AGENT'.
'to get' is the link.
Can you help me to learn more?
(Other definitions for secret agent that I've seen before include "007 - centre stage (anag)" , "Spy" , "Conrad character" .)