venom vs snake venom

venom and snake venom both are nouns.

Word	Noun	Adjective	Verb	Adverb
venom	Yes	No	No	No
snake venom	Yes	No	No	No

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

venom: toxin secreted by animals; secreted by certain snakes and poisonous insects (e.g., spiders and scorpions)
snake venom: venom secreted by certain snakes

Other hyponyms of venom include kokoi venom.

venom (noun)	snake venom (noun)
feeling a need to see others suffer	venom secreted by certain snakes
toxin secreted by animals; secreted by certain snakes and poisonous insects (e.g., spiders and scorpions)