Depending upon your reference point, it takes 27.3 days for the moon to orbit the earth if you use the earth as the reference point. This is called the sidereal month. If you use the sun as the reference point, then it takes 29.5 days for the moon to orbit the earth. This is called the synodic month.
one year
29 earth years
365.25 days
27.32 days
It takes the earth 365.25(1 year) days to complete 1 revolution!
One year
one day
About 687 Earth days.
365
It takes one year for the earth to revolve around the sun.
It takes the earth 1 day
One revolution of the Earth is called a day. One orbit around the Sun is called a year.