Mix, combine (5)
I believe the answer is:
blend
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">mix</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that mix can be written as blend)</span><br/ ><br/ >'<span class="explanation-format__original">combine</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that combine can be written as blend)</span><br/ ><br/ ></span>
(Other definitions for blend that I've seen before include "Fusion" , "Thorough mixture" , "Intermix" , "Coalesce" , "Mix together" .)