Dexedrine vs amphetamine

Dexedrine and amphetamine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dexedrine	Yes	No	No	No
amphetamine	Yes	No	No	No

As nouns, amphetamine is a hypernym of Dexedrine; that is, amphetamine is a word with a broader meaning than Dexedrine:

Dexedrine: an isomer of amphetamine (trade name Dexedrine) used as a central nervous system stimulant
amphetamine: a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

Other hypernyms of Dexedrine include pep pill, speed, upper.

Dexedrine (noun)	amphetamine (noun)
an isomer of amphetamine (trade name Dexedrine) used as a central nervous system stimulant	a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression