Very basic information? (3-4)
I believe the answer is:
low-down
This might be a double definition.
'very basic' is the first definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'information?' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for low-down that I've seen before include "Mean, unfair" , "Inside story" , "Data - base" , "Info (slang) - dishonourable" , "Inside information - mean (7;3-4)" .)