alpha-tocopheral vs tocopherol

alpha-tocopheral and tocopherol both are nouns.

Word	Noun	Adjective	Verb	Adverb
alpha-tocopheral	Yes	No	No	No
tocopherol	Yes	No	No	No

As nouns, tocopherol is a hypernym of alpha-tocopheral; that is, tocopherol 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
tocopherol: 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, vitamin E.

alpha-tocopheral (noun)	tocopherol (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