yellow jacket vs barbiturate

yellow jacket and barbiturate both are nouns.

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

As nouns, barbiturate is a hypernym of yellow jacket; that is, barbiturate is a word with a broader meaning than yellow jacket:

yellow jacket: a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic
barbiturate: organic compound having powerful soporific effect; overdose can be fatal

yellow jacket (noun)	barbiturate (noun)
small yellow-marked social wasp commonly nesting in the ground	organic compound having powerful soporific effect; overdose can be fatal
a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic