Biru-either the name of a small river or the native chief who lived nearby-was the source of this country's name. Peru
A government ruled by a small group of people is an oligarchy.
Alexander Island
Lacy is from the coast of France coming from a small town unkown. The name commonly means third daughter of a third son.
vassal or celts
mosaic
It's a mosaic.
Mosaic
Tesserae.
tesserae
Mastic (adhesive), grout, pieces of whatever substances or materials the mosaic is composed of (tile, metal, macarone...)
Data
Confetti is the name of the small pieces of paper thrown at a celebration to add to the festive atmosphere.
If you are referring to the art in general, as in the type of art famous for depicting Bible scenes in cathedrals and church sanctuaries, it is simply called stained glass, or Mosaic, art.
Confetti
I think it's a nugget.
Confetti