Answer four consecutive letters about an Asian currency (7)
I believe the answer is:
afghani
This clue might be a double definition.
'answer four consecutive letters' is the first definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'an asian currency' is the second definition.
(I've seen this before)
'about' is the link.
Can you help me to learn more?
(Other definitions for afghani that I've seen before include "'Person from Kabul, say (7)'" , "Native of Kandahar" , "Asian money" , "language" , "foreign money" .)