A Bowl is the evolutionary midpoint between the cup and the plate

A Bowl is a plate with guardrails

The Bowl is the spoon of plates

A Calendar's days are numbered.

A Calendar is a device that ensures that your days are numbered.

A Calendar is not a thing that actually tells you what day it is. It just gives you a list of options to choose from.

A Calendar is a method of reminding us that each day that passes is the anniversary of some perfectly uninteresting event.