
Gibbous
Astronomical Usage
Use 'gibbous' to describe the moon or planets when discussing astronomy. It signals specific lunar phases. 
Poetic Imagery
Writers use 'gibbous' to evoke vivid imagery or describe the moon in creative writing. 
Waxing and Waning
'Gibbous' often combines with 'waning' or 'waxing' to show whether the moon is shrinking or growing. 