Sorts, kinds (5)
I believe the answer is:
types
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">sorts</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(type is a kind of sort)</span><br/ ><br/ >'<span class="explanation-format__original">kinds</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(type is a kind of kind)</span><br/ ><br/ ></span>
(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" .)