pervert vs poison

pervert and poison both are nouns.

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

As verbs, poison is a hyponym of pervert; that is, poison is a word with a more specific, narrower meaning than pervert:

pervert (noun)	poison (noun)
a person whose behavior deviates from what is acceptable especially in sexual behavior	anything that harms or destroys
	any substance that causes injury or illness or death of a living organism

pervert (verb)	poison (verb)
change the inherent purpose or function of something	administer poison to
practice sophistry; change the meaning of or be vague about in order to mislead or deceive	add poison to
corrupt morally or by intemperance or sensuality	kill with poison
	kill by its poison
	spoil as if by poison