yellow jacket vs pentobarbital

yellow jacket and pentobarbital both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow jacket	Yes	No	No	No
pentobarbital	Yes	No	No	No

As nouns, yellow jacket and pentobarbital are synonyms defined as:

yellow jacket and pentobarbital: a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic

Other synonyms of yellow jacket include Nembutal, pentobarbital sodium.

yellow jacket (noun)	pentobarbital (noun)
small yellow-marked social wasp commonly nesting in the ground	a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic
a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic