cycle, time, age, twelve months
annum
anniversary is a synonym for it.
quinquenial
lustrum
Each/every/once a year.
Two hundred year anniversary, but that's not "one word".
a part of the year like winter summer spring autumn
While Americans say "Grade", meaning the class at school, the English say "Year", as in "I'm in Year 7".
Yearlong is a word , a synonym could include: All year
What is synonym for merchant? What is synonym for merchant?
synonymize
What is the synonym government.