Sorts, kinds (5)
I believe the answer is:
types
This clue is a double definition.
'sorts' is the first definition.
(type is a kind of sort)
'kinds' is the second definition.
(type is a kind of kind)
(Other definitions for types that I've seen before include "Categories having common characteristics" , "Sorts - varieties" , "Writes using a keyboard" , "Characters" , "Uses a keyboard to write" .)