Respuesta :
They are both the same
1 millenium - 1000 yrs
1 century -100 yrs
100 x 10 - 1000yrs
1 millenium - 1000 yrs
1 century -100 yrs
100 x 10 - 1000yrs
1 millennium cause centuries is a 100 years millennium is 1001 years so it is not centuries