Passionate deed — something changed in text (9)
I believe the answer is:
redaction
'text' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
I also know that 'text' relates to this answer.
'passionate deed something changed' is the wordplay.
I cannot really see how this works, but
'deed' could be 'action' (I've seen this before) and 'action' is found in the answer.
The remaining letters 'red' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for redaction that I've seen before include "text version" , "Amended written account" , "Editing a work" , "Edited version" , "process of censorship" .)