Write definitions of the underlined words. Напишите определения подчеркнутых слов. Decade is a period of 10 years

Decade is a period of 10 years. — Десятилетие – период в 10 лет.
Century is a period of 100 years. — Век – период в 100 лет.
Millennium is a period of 1000 years. – Тысячелетие – период в 1000 лет.