caustic vs blistering

caustic and blistering both are nouns.

Word	Noun	Adjective	Verb	Adverb
caustic	Yes	Yes	No	No
blistering	Yes	Yes	No	No

As adjectives, caustic and blistering are synonyms defined as:

Other synonyms of caustic include acerb, acerbic, acid, acrid, bitter, sulfurous, sulphurous, virulent, vitriolic.

caustic (noun)	blistering (noun)
the envelope of light rays reflected or refracted by a curved surface or object	the formation of vesicles in or beneath the skin
any chemical substance that burns or destroys living tissue

caustic (adjective)	blistering (adjective)
of a substance, especially a strong acid; capable of destroying or eating away by chemical action	very fast; capable of quick response and great speed
harsh or corrosive in tone	hot enough to raise (or as if to raise) blisters
	harsh or corrosive in tone