diff --git a/Glossary.md b/Glossary.md
index b5730c1..86e6e23 100644
--- a/Glossary.md
+++ b/Glossary.md
@@ -1,6 +1,8 @@
-- Unique Local Unicast Adressen
-- Global Unicast Adressen
-- Provider Independent Address Space (PI-Space)
+Unique Local Unicast Adressen: Private IPv6 addresses used for communication within a single organization or site. They are not routable on the global internet. Prefix: fd00::/8.
+
+Global Unicast Adressen: Public IPv6 addresses that are globally routable on the internet. They are assigned by IANA/ISPs and are used for direct communication across networks. Prefix example: 2000::/3.
+
+Provider Independent Address Space (PI-Space): IPv6 address blocks assigned directly to organizations by a registry (not through an ISP), allowing them to keep their addresses even when switching internet providers.
 
 SSH(Secure Shell): A protocol used to securely access and manage devices over a network using encrypted communication.
 
@@ -8,4 +10,6 @@ ACL(Access Control List): A set of rules used to control network traffic and res
 
 DHCPv6(Dynamic Host Configuration Protocol for IPv6): A protocol that automatically assigns IPv6 addresses and configuration settings to devices on a network.
 
+SLAAC(Stateless Address Autoconfiguration): SLAAC is an IPv6 feature that allows devices to automatically generate their own IP address using router advertisements, without needing a DHCP server.
+
 OSPFv3(Open Shortest Path First version 3): A routing protocol used in IPv6 networks to find the best path for data between routers.