Write category (4)
I believe the answer is:
type
I believe this is a double definition.
'write' is the first definition.
(typing is a kind of writing)
'category' is the second definition.
(type is a kind of category)
(Other definitions for type that I've seen before include "Use a keyboard; sort" , "Courier for example" , "Class, kind or category" , "Print form" , "Print - classification" .)