sarin vs G-series agent

sarin and G-series agent both are nouns.

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

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

sarin: a highly toxic chemical nerve agent that inhibits the activity of cholinesterase
G-series 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 nerve agent, G agent.

sarin (noun)	G-series 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.