A period of ten years is a decade.
A Period of ten years is called a decade.
A period lasting ten years, or any ten year period.
The minimum period is two years and can be as long as ten years.
First of all I'm pretty sure you wouldn't want to get your period.... Well I'm ten years old and I have been getting cramps in my lower stomach. I might get my period soon. Getting your period at ten years old depends on who you are but it is possible to get your period at ten years old like I might soon
A decade is a period of 10 years
a decade is a period of ten years, while a century is a period of 100 years.