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.
Guanciale is Italian cured pork cheek or jowl. It's traditionally used in classic pastas, like spaghetti all carbonara and bucatini all'amatriciana. Because it's largely fat, guanciale has a more seductive pork flavor and delicate texture than cured meat that comes from the belly (like pancetta, which is a common substitute, though the flavor isn't the same).