Name a favourite piece of verse (5)
I believe the answer is:
peter
'name' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'a favourite piece of verse' is the wordplay.
'a favourite' becomes 'pet' (synonyms).
'piece of verse' becomes 'er' (I can't explain this - if you can you should give a lot more credence to this answer).
'pet'+'er'='PETER'
Can you help me to learn more?
(Other definitions for peter that I've seen before include "and 16: Actor who played Hercule Poirot" , "Rock-like apostle" , "and 4 across Doctor Who actor" , "Early Pope" , "Safe - name for a man" .)