The time period between being elected and taking office as president is known as the lame duck period.
It is known as the gestation period.
A period of 4 years between games.
The period in Japanese history between 1600-1853; also known as the Edo Period.
the four year period between the olympic games
The two-year period between congressional elections is known as a term. This is the period which the elected officials will hold office.
The age of enlightenment
The Games take place every four (4) years.