blistering agent vs mustard gas

blistering agent and mustard gas both are nouns.

Word	Noun	Adjective	Verb	Adverb
blistering agent	Yes	No	No	No
mustard gas	Yes	No	No	No

As nouns, blistering agent and mustard gas are synonyms defined as:

blistering agent and mustard gas: a toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs; there is no known antidote

Other synonyms of blistering agent include dichloroethyl sulfide, mustard agent, sulfur mustard.

blistering agent (noun)	mustard gas (noun)
a toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs; there is no known antidote	a toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs; there is no known antidote