bad person vs snake

bad person and snake both are nouns.

Word	Noun	Adjective	Verb	Adverb
bad person	Yes	No	No	No
snake	Yes	No	Yes	No

As nouns, snake is a hyponym of bad person; that is, snake is a word with a more specific, narrower meaning than bad person:

bad person (noun)	snake (noun)
a person who does harm to others	limbless scaly elongate reptile; some are venomous
	something long, thin, and flexible that resembles a snake
	a long flexible steel coil for dislodging stoppages in curved pipes
	a deceitful or treacherous person

bad person (verb)	snake (verb)
	move along a winding path
	move smoothly and sinuously, like a snake
	form a snake-like pattern