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grandmother – n. the mother of your father or mother
great-grandmother -- n. the mother of one's grandmother or grandfather.
granddaughter -- n. a daughter of your son or daughter
phrase -- n. a group of two or more words that express a single idea but do not usually form a complete sentence; a brief expression that is commonly used
challenge -- n. a difficult task or problem : something that is hard to do
global -- adj. involving the entire world
