You call a hundred years a century. If someone lives to one hundred years, that is considered to be quite an achievement.
a century
a century
One-hundred years is what we call a century.
A period of 100 years is a century
A period of 100 years is called a century.
Rostam was an Iranian warrior who reappears periodically over a period of three hundred years to drive back the Turks.
A period of 100 years is conveyed by the single word century.
Two centuries = 200 years
centenarian
A period of seven years is called a septennium.
One thousand years is a millennium, from the Latin "mille" for "thousand". One hundred years is a century, from the Latin "centum" for "hundred".