alpha-tocopheral vs vitamin E

alpha-tocopheral and vitamin E both are nouns.

Word	Noun	Adjective	Verb	Adverb
alpha-tocopheral	Yes	No	No	No
vitamin E	Yes	No	No	No

As nouns, vitamin E is a hypernym of alpha-tocopheral; that is, vitamin E is a word with a broader meaning than alpha-tocopheral:

alpha-tocopheral: a potent form of vitamin E obtained from germ oils or by synthesis
vitamin E: a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body

Other hypernyms of alpha-tocopheral include E, tocopherol.

alpha-tocopheral (noun)	vitamin E (noun)
a potent form of vitamin E obtained from germ oils or by synthesis	a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body