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The Security Council is the part of the United Nations that can make decisions member countries are expected to carry out. There are 15 members: five permanent ones and ten elected for two-year terms by the General Assembly.
In a parliamentary system, the government needs the support of more than half the members of the lower house. If no single party has a majority, two or more parties can agree to support one government together.
Most parliaments follow a similar path, even if the names of the stages differ. A bill is introduced and debated in principle before members look at the detail.
A budget speech is the government's yearly statement of what it plans to spend, how it will raise money and what taxes will change. Most tax changes are written into a finance bill.
The G20 is a forum where the largest economies meet to talk about growth, trade, debt and other shared problems.
A secret ballot means nobody can see or prove how an individual voted. If a vote can't be proven, it can't be bought or punished, which makes coercion far less effective.
A manifesto sets out what a party says it will do if elected, but promises vary a lot in how specific they are. A promise with a target and a deadline is easier to judge later than a general aim.