diff --git a/ch02.asciidoc b/ch02.asciidoc
index ab6275ee..3d09c096 100644
--- a/ch02.asciidoc
+++ b/ch02.asciidoc
@@ -347,13 +347,12 @@ wants to send to Bob. Most wallets keep track of all the available
 outputs belonging to addresses in the wallet. Therefore, Alice's wallet
 would contain a copy of the transaction output from Joe's transaction,
 which was created in exchange for cash (see <<getting_first_bitcoin>>).
-A bitcoin wallet application that runs as a full-node client actually
-contains a copy of every unspent output from every transaction in the
-blockchain. This allows a wallet to construct transaction inputs as well
-as quickly verify incoming transactions as having correct inputs.
-However, because a full-node client takes up a lot of disk space, most
+A bitcoin wallet application that runs on a full node actually
+contains a copy of every confirmed transaction's unspent outputs, called
+*Unspent Transaction Outputs* (UTXOs).
+However, because full nodes use more resources, most
 user wallets run "lightweight" clients that track only the user's own
-unspent outputs.
+UTXOs.
 
 If the wallet application does not maintain a copy of unspent
 transaction outputs, it can query the Bitcoin network to retrieve this