Thought; kindness (13)
I believe the answer is:
consideration
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">thought</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(consideration is a kind of thought)</span><br/ ><br/ >'<span class="explanation-format__original">kindness</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that consideration is a type of kindness)</span><br/ ><br/ ></span>
(Other definitions for consideration that I've seen before include "A motive" , "Thoughtfulness - relevant factor" , "Study" , "factor to be borne in mind" , "Reward; careful thought" .)