Yes, the two "Address:Port" columns are for the IP address and port being used locally and by the other end of the connection.
"Peer" is a common term used for the machine on the other end of a network connection because, historically, all servers on the internet were originally considered to be equal peers rather than divided into "client machines" and "server machines".
In the output of
ss -l, the peer is always listed as
* (used as a wildcard) because the
-l option tells it to show only ports which are listening for new connections, not those which have connections established. If you run
-l, you should get some
Peer Address:Port entries such as
126.96.36.199:https, showing that you have an active https connection to a peer with IP address 188.8.131.52.