Returns my non-yes; ends meaning the same thing! (7)
I believe the answer is:
synonym
'the same thing' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe there's a link between them I don't understand?
'returns my non-yes ends' is the wordplay.
'returns' says the letters should be written in reverse.
'ends' suggests removing the centre.
'yes' with its centre taken out is 'ys'.
'my'+'non'+'ys'='mynonys'
'mynonys' written backwards gives 'SYNONYM'.
'meaning' acts as a link.
Can you help me to learn more?
(Other definitions for synonym that I've seen before include "Substitute brought in for a term" , "Word with meaning similar to that of another" , "Quick crossword clue" , "A word that can be interchanged with another" , "My sonny (anag)" .)