Obtain, secure (4)
I believe the answer is:
gain
I believe this is a double definition.
'obtain' is the first definition.
(I know that gain is a type of obtain)
'secure' is the second definition.
(gaining is a kind of securing)
(Other definitions for gain that I've seen before include "Increase; secure" , "Pick up" , "Obtain; earn" , "Obtain; benefit" , "Benefit; increase in value" .)