Lisa worked with a different name (5)
I believe the answer is:
alias
'different name' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'lisa worked with a' is the wordplay.
'worked with' indicates anagramming the letters.
'lisa' anagrammed with 'a' makes 'ALIAS'.
Can you help me to learn more?
(Other definitions for alias that I've seen before include "stage name, perhaps" , "A sail (anag)" , "Assumed identity" , "one's assumed" , "Otherwise called" .)