A tip (also called a gratuity) is a voluntary extra payment made to certain service sector workers in addition to the advertised price of the transaction. Such payments and their size are a matter of social custom.

To many people in many cultures music is an important part of their way of life. Greek philosophers and ancient Indian philosophers defined music as tones ordered horizontally as melodies and vertically as harmonies. Common sayings such as "the harmony of the spheres" and "it is music to my ears" point to the notion that music is often ordered and pleasant to listen to

Democracy is a political government either carried out directly by the people (direct democracy) or by means of elected representatives of the people (Representative democracy).

BBC News is the department of the BBC responsible for news and current affairs output. The world's largest broadcast news organisation, it generates each day about 120 hours of radio and television, as well as online news coverage. The service maintains 44 foreign news bureaux and has correspondents in almost all the world's 240 countries.