diff --git a/ch02.asciidoc b/ch02.asciidoc
index c446aac5..55ccaf5d 100644
--- a/ch02.asciidoc
+++ b/ch02.asciidoc
@@ -216,11 +216,11 @@ View the http://bit.ly/1u0FIGs[transaction from Alice to Bob's Cafe].
 
 ===== Transmitting the transaction
 
-Because the transaction contains all the information necessary to process, it does not matter how or where it is transmitted to the bitcoin network. The bitcoin network is a peer-to-peer network, with each bitcoin client participating by connecting to several other bitcoin clients. The purpose of the bitcoin network is to propagate transactions and blocks to all participants.
+((("propagation", "process of")))Because the transaction contains all the information necessary to process, it does not matter how or where it is transmitted to the bitcoin network. The bitcoin network is a peer-to-peer network, with each bitcoin client participating by connecting to several other bitcoin clients. The purpose of the bitcoin network is to propagate transactions and blocks to all participants.
 
 ===== How it propagates
 
-((("bitcoin nodes", "defined")))((("nodes", see="bitcoin nodes")))Any system, such as a server, desktop application, or wallet, that participates in the bitcoin network by "speaking" the bitcoin protocol is called a _bitcoin node_. Alice's wallet application can send the new transaction to any bitcoin node it is connected to over any type of connection: wired, WiFi, mobile, etc.  Her bitcoin wallet does not have to be connected to Bob's bitcoin wallet directly and she does not have to use the internet connection offered by the cafe, though both those options are possible, too. Any bitcoin node that receives a valid transaction it has not seen before will immediately forward it to all other nodes to which it is connected, a propagation technique known as _flooding_. Thus, the transaction rapidly propagates out across the peer-to-peer network, reaching a large percentage of the nodes within a few seconds.
+((("bitcoin nodes", "defined")))((("nodes", see="bitcoin nodes")))Any system, such as a server, desktop application, or wallet, that participates in the bitcoin network by "speaking" the bitcoin protocol is called a _bitcoin node_. Alice's wallet application can send the new transaction to any bitcoin node it is connected to over any type of connection: wired, WiFi, mobile, etc.  Her bitcoin wallet does not have to be connected to Bob's bitcoin wallet directly and she does not have to use the internet connection offered by the cafe, though both those options are possible, too. ((("propagation", "flooding technique")))((("flooding technique")))Any bitcoin node that receives a valid transaction it has not seen before will immediately forward it to all other nodes to which it is connected, a propagation technique known as _flooding_. Thus, the transaction rapidly propagates out across the peer-to-peer network, reaching a large percentage of the nodes within a few seconds.
 
 ===== Bob's view