Qualification perhaps revised article containing loose end (10)
I believe the answer is:
credential
'qualification' 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?
'revised article containing loose end' is the wordplay.
'revised' indicates anagramming the letters.
'containing' means one lot of letters goes inside another.
'loose' indicates anagramming the letters (letters are loosened from their original positions).
'article' is an anagram of 'cretial'.
'end' is an anagram of 'den'.
'cretial' placed around 'den' is 'CREDENTIAL'.
'perhaps' acts as a link.
Can you help me to learn more?
(Other definitions for credential that I've seen before include "proof of entitlement" , "Official introductory letter" , "Interlaced (anag.)" , "Qualification (indicating a person's suitability)" .)