Short song about flowery tree - no examples of this round here (9)
I believe the answer is:
heteronym
'no examples of this round here' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?
'short song about flowery tree' is the wordplay.
I cannot really understand how this works, but
'about' could be 'on' (as in a book 'on' a certain topic) and 'on' is found within the answer.
an anagram of 'tree' is 'eter' which is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for heteronym that I've seen before include "[DOES] , for example" , "lead, say" .)