Different Chat Modes -
Normal:
Normal chat with a very short distance. This is a good hello to another member, you help you meet while hunting monsters in Twelvesky2, because it does not any further than sight.
Party:
When in a party, players can use Party chat in order to chat with each other regardless of zone. Only party members will see this chat(12sky2 Gold).
Guild:
Guild chat is similar to Party chat, in that all Guild members can chat with each other regardless of zone. However, Parties are limited to 5 and are temporary, while Guilds have a much larger limit and generally last for a longer duration.
Faction:
Faction chat allows players to chat with other members of their Faction within the same zone. All Faction members in the zone can read this type of chat.
Shout:
Only usable in Saigo Temple. Members of all Factions can read this chat, so it is often used for trade purposes(Twelve Sky2 Gold).
Whisper:
A player can type in a character(Twelvesky2 powerleveling) name next to the word "whisper" in order to send a message to one specific person. Whispers can be blocked through the Options Menu (Esc).
Guild in Twelvesky2: Guild chat is similar to Party chat, in that all Guild members can chat with each other regardless of zone. However, Parties are limited to 5 and are temporary, while Guilds have a much larger limit and generally last for a longer duration.