The difference between Ephemeral and Volatile

Ephemeral as a noun:

Something which lasts for a short period of time.

Ephemeral as an adjective:

Lasting for a short period of time.

Ephemeral as an adjective (biology):

Existing for only one day, as with some flowers, insects, and diseases.

Ephemeral as an adjective (geology, of a body of water):

Usually dry, but filling with water for brief periods during and after precipitation.

Volatile as an adjective (physics):

evaporating or vaporizing readily under normal conditions.

Volatile as an adjective (of a substance, informal):

explosive.

Volatile as an adjective (of a price etc):

variable or erratic.

Volatile as an adjective (of a person):

quick to become angry or violent.

Volatile as an adjective:

fickle.

Volatile as an adjective:

temporary or ephemeral.

Volatile as an adjective (of a situation):

potentially violent.

Volatile as an adjective (computing, of a variable):

having its associated memory immediately updated with any changes in value.

Volatile as an adjective (computing, of memory):

whose content is lost when the computer is powered down

Volatile as an adjective (obsolete):

Passing through the air on wings, or by the buoyant force of the atmosphere; flying; having the power to fly.

Volatile as a noun:

A chemical or compound that changes into a gas easily.