The G25 light bulb size is a commonly referred to as a vanity bulb.  G40/G125 bulbs are much larger globes and serve as showpieces.  They can be used together and in combination with other bulb sizes for dramatic hanging light displays.

G25

G25 NorbCOZY vintage edison bulb being held in hands

G40 / G125

G40 NorbCOZY vintage edison bulb being held in hands