[zahlman]

That explains the words "venomous" and "poisonous" used of creatures.

It's different for the actual substances. Although it relates: a venomous creature that bites you will release its venom into your bloodstream.

[anonym29]

>a venomous creature that bites you will release its venom into your bloodstream

unless it's a bee, wasp, hornet, scorpion, stingray, jellyfish, man-of-war, platypus, lionfish, stonefish, sea urchin, or catfish, which all have venom instead of poison, but the delivery mechanism of said venom isn't biting

[zahlman]

I said "bite" echoing the comment I was replying to. Obviously the same applies, mutatis mutandis, to stinging etc.