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 bone has a name
Matter
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.
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.