the ability or power to manage, direct, or make decisions regarding something
His son is out of control.

to employ someone
Mr. Green hired five new people at his office.

the state or act of improving or being improved
The businessman bought the bridge and made many improvements.

one of the parts that you push with your fingers to play a piano
How many keys are their on a piano?

a particular musical sound produced by an instrument or a person's voice
He played the first few notes of the tune.

to push against
We pressed the emergency button as soon as we realized the elevator was stuck.

the limits within which something extends or varies
For any problem, there is a range of possible solutions.

a family member
Family members are a great way to get to know distant relatives.

a nation in which the people vote for the government representatives and in which the head of state is a president and not a king or queen
The republic demands that Citizen Evremonde goes on trial tomorrow.

involving machines and how they work
You need the technical skills to operate that piece of machinery.