Belief, trust (5)
I believe the answer is:
faith
I believe this is a double definition.
'belief' is the first definition.
(I know that faith is a type of belief)
'trust' is the second definition.
(I know that trust can be written as faith)
(Other definitions for faith that I've seen before include "religion" , "A woman" , "Total trust" , "Trust in someone" , "Unshakeable belief" .)