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.
Arrayan (Mexican name) is known in english as Sartre Guava and is Psidium sartorianum. It is a small marble sized guava that is green, turning a dull yellow-orange when ripe. There appear to be 1-2 large seeds in the fruit similar rather than the multitude found in most other guavas.