the year is called a leap year.
occurs every four years. the additional day is added on the 29th of February which originally has 28 days.
Biennial (biannual is twice a yesr)
A Leap Year.
5 years are called a quinquennium
Every tropical storm and therefore every hurricane has a name. But a name is not necessarily unique to one storm as a hurricane name becomes available for re-use every six years unless it is retired.
Every bone has a name
Matter
It was called the Age of Exploration
It was given the name middle ages because it was the years between prehistoric times and modern times.
1 _ 3
It is called karate in every country, using the name given to it in Okinawa.
Twenty of anything is called a 'score'
Yes. My father always write "Pat" on every single form instead of his given name which is "Patrick" as everyone calls him that.