Matching Pairs Periods of TimeOnline version Vocabulary related to periods of time. by Jorge Cardoza 1 A period of 100 years. 2 It is a span of time defined for the purposes of chronology or historiography. 3 A period of ten years. 4 A period of human life, measured by years from birth, 5 All of the people born and living at about the same time, regarded collectively. 6 80s 7 It was a decade of the Gregorian calendar that began on January 1, 1970, and ended on December 31, 1979. 8 It was a decade of the Gregorian calendar that began on January 1, 1980, and ended on December 31, 1989. 9 A period of one thousand years. 10 70s 11 A period of twenty-five years. An era A generation Same as nineteen-seventies (1970s) An age A millenium Same as nineteen-eighties (1980s) A quarter-century The nineteen-seventies (1970s) a decade A century The nineteen-eighties (1980s)