Class, sort (4)
I believe the answer is:
type
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">class</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(both can mean a variety or kind)</span><br/ ><br/ >'<span class="explanation-format__original">sort</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that type is a type of sort)</span><br/ ><br/ ></span>
(Other definitions for type that I've seen before include "Mark" , "Print - classification" , "Stamp" , "Category; use keyboard" , "get words on to paper?" .)