Wax and wane意思
"Wax" and "wane" are words that are often used together because they describe opposite phases of the lunar cycle.
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"Wax" means to increase in size, especially referring to the moon as it moves from new moon to full moon. The word "waxing" is used to describe the phase of the moon when it appears to be getting larger.
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"Wane" means to decrease in size, again particularly referring to the moon as it moves from full moon back to new moon. The word "waning" is used to describe the phase of the moon when it appears to be getting smaller.
These words can also be used metaphorically to describe any situation where something goes through cycles of growth and decline.