The lunar phase cycle from a full moon to new moon and back again is called a lunation.
However, the moon has an elliptical orbit and is sometimes closer to the earth than at other times. A full moon when it is close to the earth looks bigger than a full moon when it is farthest away. It takes 14 lunations for the pattern of full moons to go from a big full moon (closest to earth) to a small full moon (farthest away) and back again. The 14 lunations are called a full moon cycle.
If you wish to consider lunar eclipses then 16 full moon cycles make up a saros. About 40 lunar eclipses occur during a saros and eclipses which occur 1 saros apart are very similar.