The F# types are mostly describing types that are not collection types. F# has its own unique collection types as well.
The F# collection features are mostly implemented as modules, with the namespace of
Microsoft.FSharp.Collections. The following are the F# collection modules:
Array: Basic operations on arrays
Array2D: Basic operations on two-dimensional arrays
Array3D: Basic operations on rank 3 arrays
Array4D: Basic operations on rank 4 arrays
ComparisonIdentity: Common notions of comparison identity used with sorted data structures
HashIdentity: Common notions of value identity used with hash tables
List: Basic operations on lists
Map: Functional programming ...