century

nouns

a period of 100 years
century
is a part of
a span of 1000 years
millenary, millennium
is a type of (narrower)
an amount of time
"a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"
period, period of time, time period
ten 10s
100, C, century, hundred, one C