Ending with hard or soft (4)
I believe the answer is:
ware
'ending with hard or soft' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ware that I've seen before include "possible purchases" , "Soft..., silver..." , "Herts town" , "Goods for sale" , "Articles of a specified type, such as pottery" .)