sarin vs G agent

sarin and G agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
sarin	Yes	No	No	No
G agent	Yes	No	No	No

As nouns, G agent is a hypernym of sarin; that is, G agent is a word with a broader meaning than sarin:

sarin: a highly toxic chemical nerve agent that inhibits the activity of cholinesterase
G agent: a non-persistent nerve agent discovered and synthesized during or prior to World War II by Dr. Gerhard Schrader.

Other hypernyms of sarin include organophosphate nerve agent, G-series agent, G-series nerve agent.

sarin (noun)	G agent (noun)
a highly toxic chemical nerve agent that inhibits the activity of cholinesterase	a non-persistent nerve agent discovered and synthesized during or prior to World War II by Dr. Gerhard Schrader.