Why does odysseus want to leave calypso and her island?

The story of the uncle’s madness is central to a servant to servants which lines tells the most haunting part of the story

Which pair of uses of figurative language from “the caged bird” support the extended metaphor of freedom versus oppression? back of the wind; floats downstream his wings are clipped; his feet are tied the caged bird sings; the free bird thinks dawn bright lawn; grave of dreams

Throughout the giver, author lois lowry renames many everyday terms. eleven-year-olds are "elevens," babies are "newchildren," stuffed animals are "comfort objects," and families are called "family units." what is the purpose of these alternate labels? what effect do they have on the story?