exercise
The exercise of restraint may sometimes be difficult.
This was simply his exercise of his First Amendment rights.
The court was asked whether it believed that the exercise of discretion was reasonable.
How should we respond to arguably unlawful exercises of authority?

SMART Vocabulary: related words and phrases

Using and misusing
adopt
adoption
avail
avail yourself of something
be/go heavy on somethingidiom
exhaust
go into something
go through
gobble something up
make capital out of somethingidiom
max
spare
spent
swallow
tap
turn to someone/something
turn/use something to good accountidiom
unblock
underuse
underused