Compound interest. Compound interest is the addition of interest to the principal sum of a loan or deposit, or in other words, interest on interest. It is the result of reinvesting interest, rather than paying it out, so that interest in the next period is then earned on the principal sum plus previously-accumulated interest.
Guanches (also: Guanchis or Guanchetos) refer to the aboriginal Berber inhabitants of the Canary Islands. It is believed that they migrated to the archipelago around 1000 BC or perhaps earlier.
GUCH is an acronym for Grown Ups with Congenital Heart defects. Adults with congenital heart defects are a group of patients which is fast growing in numbers, due to advances in cardiac surgery and intensive care in the 1970s and 1980s. In some countries a specialised programme has been established.