pantothen vs B-complex vitamin

pantothen and B-complex vitamin both are nouns.

Word	Noun	Adjective	Verb	Adverb
pantothen	Yes	No	No	No
B-complex vitamin	Yes	No	No	No

As nouns, B-complex vitamin is a hypernym of pantothen; that is, B-complex vitamin is a word with a broader meaning than pantothen:

pantothen: a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods
B-complex vitamin: originally thought to be a single vitamin but now separated into several B vitamins

Other hypernyms of pantothen include acid, B, B complex, B vitamin, vitamin B, vitamin B complex.

pantothen (noun)	B-complex vitamin (noun)
a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods	originally thought to be a single vitamin but now separated into several B vitamins