Applications, purposes (4)
I believe the answer is:
uses
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">applications</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(use can mean an application or purpose)</span><br/ ><br/ >'<span class="explanation-format__original">purposes</span>' is the second definition.<br/ ><span class="explanation-format__explanation">('use' can be a synonym of 'purpose')</span><br/ ><br/ ></span>
(Other definitions for uses that I've seen before include "What an employer does" , "Exercises" , "Puts to a particular purpose" , "Customs" , "Sues (anag.)" .)