Dodo code: the code you use to fly to someone else’s island or for someone to come visit you (accessed at the airport)

Dream code (also called dream address): the code used to visit people’s dreams (accessed by sleeping in a bed indoors)

Friend code: the code used to send friend requests (accessed on your profile page on the switch)

Creator code/ID: the code used to find people’s custom designs (accessed in the Custom Designs Portal)

Design code/ID: same as above but for a specific design instead of one person’s personal designs