poison vs subvert

poison is a noun but subvert is not a noun.

Word	Noun	Adjective	Verb	Adverb
poison	Yes	No	Yes	No
subvert	No	No	Yes	No

As verbs, subvert is a hypernym of poison; that is, subvert is a word with a broader meaning than poison:

Other hypernyms of poison include corrupt, debase, debauch, demoralise, demoralize, deprave, misdirect, pervert, profane, vitiate.

poison (noun)	subvert (noun)
anything that harms or destroys
any substance that causes injury or illness or death of a living organism

poison (verb)	subvert (verb)
administer poison to	to raze to the ground, also figuratively
add poison to	cause the downfall of; of rulers
kill with poison	destroy property or hinder normal operations
kill by its poison	corrupt morally or by intemperance or sensuality
spoil as if by poison