Although the two terms are often used interchangeably, they refer to whether a plant or animal secretes or injects its toxin.  A venomous snake injects toxins through fangs, whereas the poisonous fugu fish has a toxin-filled liver that requires skillful removal by an unsloppy sushi chef.

These signs, at the last Gainesville rest area on the southbound I-75, warn of snakes that do not, strictly speaking, exist.  The rest area is at the northern edge of Payne’s Prairie, a state park savannah that would contain at least four types of venomous snake:  Eastern diamondback rattlesnake, dusky pygmy rattlesnake, copperhead, and the cottonmouth water moccasin.

Interesting fact:  As of a year ago, the US is no longer producing coral snake antivenin.  Red touches yellow, you’re on your own.