Multimedia lecture shows way of speaking (7)
I believe the answer is:
dialect
'way of speaking' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'multimedia lecture shows' is the wordplay.
'shows' indicates the answer is hidden within the clue.
'DIALECT' is hidden within 'multimedia lecture'.
Can you help me to learn more?
(Other definitions for dialect that I've seen before include "talk from the regions" , "Local idiom" , "Vernacular" , "Local way of speaking" , "Local language variant" .)