Waxing Moon: The moon at any time after new moon and before full moon, so called because its illuminated area is increasing.
Crescent Moon: A crescent moon is partway between a half moon and a new moon.
Waning Moon: If the right side of Moon is dark then the light part is shrinking, and this type of Moon is referred to as an waning.
Waxing Moon: The moon at anytime after new moon and before an full moon is the illuminated area is increasing.
Waning moon is when the light on the moon is decreasing and a waxing moon increases the light.
The lunar phases change cyclically as the moon orbits the earth. That is around 29 days.