mustard gas vs blistering agent

mustard gas and blistering agent both are nouns.

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

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

mustard gas and blistering agent: 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 mustard gas include dichloroethyl sulfide, mustard agent, sulfur mustard.

mustard gas (noun)	blistering agent (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