acrid vs acid

acrid is not a noun while acid is a noun.

Word	Noun	Adjective	Verb	Adverb
acrid	No	Yes	No	No
acid	Yes	Yes	No	No

As adjectives, acrid and acid are synonyms defined as:

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

acrid (noun)	acid (noun)
	street name for lysergic acid diethylamide
	any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt

acrid (adjective)	acid (adjective)
strong and sharp	having the characteristics of an acid
harsh or corrosive in tone	being sour to the taste
	harsh or corrosive in tone