Vitriolic vs Vicious - What's the difference?

As adjectives the difference between vitriolic and vicious

is that vitriolic is of, derived from, or similar to a vitriol while vicious is pertaining to vice; characterised by immorality or depravity.

(en adjective)

of, derived from, or similar to a vitriol

bitterly scathing; caustic: vitriolic criticism

(chemistry): Of or pertaining to vitriol; derived from, or resembling, vitriol; vitriolous; as, a vitriolic taste.

* (obsolete)

(en-adj)

Pertaining to vice; characterised by immorality or depravity.

*, Folio Society, 2006, vol.1, p.195:

*:We may so seize on vertue, that if we embrace it with an over-greedy and violent desire, it may become vicious .

Evil, immoral or depraved.

Violent, destructive and cruel.

Savage and aggressive.

* vicious circle