A few words to start you reading (7)
I believe the answer is:
caption
'start you reading' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'a few words to' is the wordplay.
I cannot quite see how this works, but
'a' is present in the answer.
'few' could be 'i' and 'i' is found within the answer.
'to' is present 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 caption that I've seen before include "Explanatory words or heading" , "Brief description of an illustration" , "Text under photo" , "Legend with a photograph" , "accompanying message" .)