Politics means the activities of the government or people who try to influence the way a country is governed. We use a singular verb with it:
A lot of young people just don’t seem interested in politics these days.
interested in policy…
Politics is power in action.
Politics also means the study of the ways in which a country is governed:
He studied Politics at university then got a job with the United Nations in New York.
The adjective form related to the noun politics is political:
My friends and I are always having political discussions late into the night.
having politic discussions…
If I did a degree, I’d like to study Political Science.
A person who is involved in politics (e.g. a member of parliament or a member of the government) is a politician:
Politicians rarely give straight answers to questions from journalists.
Politics rarely give straight answers…
Policy means a plan of action or a set of rules agreed by a business, a political group or a government, saying what they will do in a particular situation:
It’s not company policy to sell goods to persons under the age of 18.
The economic policy of the government is in ruins because of the global credit crisis.
The economic politics of the government…