A decade.
No, a decade is every ten years, a century is every 100.
Eight score and ten is 170-years. A score equals twenty-years. The most famous use of the word score, is in the Gettysburg Address. Score is a slang term for a twenty-dollar bill.
true
A period of ten years is a decade.
decennial Occurring every ten (10) years. Also tenth anniversary
Passion Play
The census in the United States is conducted every 10 years.
I think you are asking about a census.
Apportionment
survey
lnenio
depends what for!
Lots of things :-)
Every ten years=once a decade
"Decentennial" is not a recognized English word. It may be a misspelling or a made-up term. If you meant "decennial," it refers to something that occurs once every ten years.
Liverpool and Berlin hosts a passion play every ten years.