Companion at an informal lecture? (4)
I believe the answer is:
chat
'an informal lecture?' 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?
'companion at' is the wordplay.
'companion' becomes 'ch' (Companion of Honour).
'ch'+'at'='CHAT'
Can you help me to learn more?
(Other definitions for chat that I've seen before include "Inconsequential conversation" , "Rabbit" , "Talk familiarly" , "Chew the fat" , "Communication" .)