sulphurous vs acerb

sulphurous and acerb both are adjectives.

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

As adjectives, sulphurous and acerb are synonyms defined as:

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

sulphurous (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