Question: what is the difference between wax and wane?
Answer: Waxing is "Maxing," or growing with light until a full moon is reached. Waning is the opposite, or decreasing after a full moon, and is always illuminated on the left. ... And then a waxing or waning Crescent Moon, when less than half is illuminated. A quarter moon is when half the surface which faces the earth is lit.