What is the connatative meaning of ash?

Ashes.deathlike grayness; extreme pallor suggestive of death.ruins, especially the residue of something destroyed; remains; vestiges:the ashes of their love; the ashes of the past.mortal remains, especially the physical or corporeal body as liable to decay.anything, as an act, gesture, speech, or feeling, that is symbolic of penance, regret, remorse, or the like.

It's a powdery residue of matter that remains after burning. Is a light silvery - grey color.