Incline, rise (6)
I believe the answer is:
ascent
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">incline</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that ascent is a type of incline)</span><br/ ><br/ >'<span class="explanation-format__original">rise</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that rise can be written as ascent)</span><br/ ><br/ ></span>
(Other definitions for ascent that I've seen before include "Uphill journey" , "A climb or way up" , "advancement" , "progress" , "lift" .)