Gain is an increase in value of the asset. Gains can occur when the initial selling price is higher than the purchasing one. Gross gain in its turn is refers to the positive difference between the sale price and the purchase price.

Gapping is the phenomenon that can occur in stock trading charts. It is a gap that can happen between the closing and opening price of the stock in case opening price is significantly higher or lower than the closing one with no trading in between them.

GBP is the abbreviation for the British pound sterling, the official currency of the United Kingdom, the British Overseas Territories of South Georgia, the South Sandwich Islands and British Antarctic Territory and the U.K. crown dependencies: the Isle of Man and the Channel Islands. The African country of Zimbabwe also uses the pound. The British pound is pegged to the Falkland Islands pound, Gibraltar pound, Saint Helenian pound, Jersey pound (JEP), Guernsey pound (GGP), Manx pounds, Scotland notes and Northern Ireland notes.

A greenback is a slang term for U.S. paper dollars. Greenbacks got their name from their color, however, in the mid-1800s, "greenback" was a negative term. During this time, the Continental Congress did not have taxing authority. As a result, the greenbacks did not have a secure financial backing and banks were reluctant to give customers the full value of the dollar.