acerb vs sulphurous

acerb and sulphurous both are adjectives.

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

As adjectives, acerb and sulphurous are synonyms defined as:

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

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