diff --git a/informational/chatdefs.md b/informational/chatdefs.md
index 65818f3..5103675 100644
--- a/informational/chatdefs.md
+++ b/informational/chatdefs.md
@@ -52,7 +52,7 @@ The term "message" often has multiple meanings depending on context. The followi
 
 **Content**: The data that is intended for end-users or applications - this includes text, images and other user valued data. These messages originate from the application, and are ultimately delivered to other applications. 
 
-**Frame**: The data generated by a chat protocol. Frames are messages used by protocols to provide functionality - they are how clients exchange information with each other and coordinate state.
+**Frame**: Frames are message types defined by chat protocols to provide functionality - they are how clients exchange information with each other and coordinate state. Once encoded into their binary representation for transport, frames become Payloads as the data is no longer usable
 
 **Payload**: The encoded data or data structures used by lower layer protocols. This includes the encoded bytes passed to a delivery service or subsequent layers. Payloads are usually associated with the delivery process, which is not defined by chat protocols.