Acidic vs. Caustic — What's the Difference?

Acid.

Capable of burning, corroding, dissolving, or eating away by chemical action.

Tending to form an acid.

Sarcastic or cutting; biting

(chemistry) Having a pH less than 7, or being sour, or having the strength to neutralize alkalis, or turning a litmus paper red.

Given to making caustic remarks

(mineralogy) Containing a high percentage of silica; opposed to basic.

A caustic material or substance.

Of or relating to acid; having the character of an acid.

A hydroxide of a light metal.

Containing a high percentage of silica; - opposed to basic.

The enveloping pattern formed by light rays reflecting or refracting from a curved surface.

Of or relating to acid; having the character of an acid, as an acidic solution.

Capable of burning, corroding or destroying organic tissue.

Having characteristics of both an acid and a base and capable of reacting as either

(of language, etc.) Sharp, bitter, cutting, biting, and sarcastic in a scathing way.

Tasting sour like acid

Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.

The envelope of reflected or refracted rays of light for a given surface or object.

(mathematics) The envelope of reflected or refracted rays for a given curve.

Caustic soda.

Capable of destroying the texture of anything or eating away its substance by chemical action; burning; corrosive; searing.

Severe; satirical; sharp; as, a caustic remark.

Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.

A caustic curve or caustic surface.

Any chemical substance that burns or destroys living tissue

Harsh or corrosive in tone;

Of a substance, especially a strong acid; capable of destroying or eating away by chemical action