sulfurous vs acerb

sulfurous and acerb both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sulfurous	No	Yes	No	No
acerb	No	Yes	No	No

As adjectives, sulfurous and acerb are synonyms defined as:

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

sulfurous (adjective)	acerb (adjective)
of or related to or containing sulfur or derived from sulfur	sour or bitter in taste
characterized by oppressive heat and humidity	harsh or corrosive in tone
harsh or corrosive in tone