- pentobarbital sodium, pentobarbital, Nembutal, yellow jacket - a barbiturate (trade name Nembutal) used as a sedative and hypnotic and anti-spasmodic
--1 is a kind of barbiturate
- yellow jacket, yellow hornet, Vespula maculifrons - small yellow-marked social wasp commonly nesting in the ground
--2 is a kind of hornet
--2 is a member of Vespula, genus Vespula