id -package:vectortiles package:ghc is:module

module GHC.Types.Id

GHC uses several kinds of name internally:

OccName: see GHC.Types.Name.Occurrence#name_types
RdrName: see GHC.Types.Name.Reader#name_types
Name: see GHC.Types.Name#name_types
Id represents names that not only have a Name but also a Type and some additional details (a IdInfo and one of LocalIdDetails or GlobalIdDetails) that are added, modified and inspected by various compiler passes. These Var names may either be global or local, see GHC.Types.Var#globalvslocal
Var: see GHC.Types.Var#name_types