Giants are a diverse group, representing a variety of cultural norms. Appearing as large or greater humanoids, they are very strong. Only ogre is available as a player character. Ogres are generally unintelligent with a significant tendency toward cruelty. Giants were cast out of the realm of Gotagra for the sin of passivity, being content with their environment. Giants were not dropped off in one location, instead being placed wherever they would be most comfortable. As such, they do not have a city or a ruler, even nominally.
Giants do not have currency as such. Instead their wealth is measured in debt, which is marked on large stone wheels outside their dwellings. The more powerful the giant, the bigger the wheel.
3 square inches on a giant’s wheel = 1 standard gold